diff --git a/Yavsc/Attributes/ActivitySettingAttribute.cs b/Yavsc/Attributes/ActivitySettingAttribute.cs
new file mode 100644
index 00000000..7b9b77bf
--- /dev/null
+++ b/Yavsc/Attributes/ActivitySettingAttribute.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace Yavsc.Attributes
+{
+    public class ActivitySettingAttribute : Attribute
+    {
+        
+    }
+}
\ No newline at end of file
diff --git a/Yavsc/Controllers/ActivityController.cs b/Yavsc/Controllers/ActivityController.cs
index 9f9ce013..c1400469 100644
--- a/Yavsc/Controllers/ActivityController.cs
+++ b/Yavsc/Controllers/ActivityController.cs
@@ -41,9 +41,9 @@ namespace Yavsc.Controllers
             var items = Startup.ProfileTypes.Select(
                 pt => new SelectListItem
                 {
-                    Text = SR[pt.Key],
-                    Value = pt.Key,
-                    Selected = currentCode == pt.Key
+                    Text = SR[pt.FullName],
+                    Value = pt.FullName,
+                    Selected = currentCode == pt.FullName
                 }).ToList();
             items.Add(new SelectListItem { Text = SR[Constants.NoneCode], Value = Constants.NoneCode, Selected = currentCode == null});
             ViewBag.SettingsClassName = items;
diff --git a/Yavsc/Controllers/DoController.cs b/Yavsc/Controllers/DoController.cs
index 10bb188d..d26798cd 100644
--- a/Yavsc/Controllers/DoController.cs
+++ b/Yavsc/Controllers/DoController.cs
@@ -7,16 +7,21 @@ using Microsoft.Data.Entity;
 
 namespace Yavsc.Controllers
 {
+    using Microsoft.Extensions.Logging;
     using Models;
     using Models.Workflow;
+    using Yavsc.ViewModels.Workflow;
+
     [Authorize]
     public class DoController : Controller
     {
         private ApplicationDbContext _context;
+        ILogger _logger;
 
-        public DoController(ApplicationDbContext context)
+        public DoController(ApplicationDbContext context,ILogger<DoController> logger)
         {
             _context = context;    
+            _logger = logger;
         }
 
         // GET: /Do/Index
@@ -48,8 +53,15 @@ namespace Yavsc.Controllers
             }
             ViewBag.HasConfigurableSettings = (userActivity.Does.SettingsClassName != null);
             if (ViewBag.HasConfigurableSettings) 
-            ViewBag.SettingsControllerName = Startup.ProfileTypes[userActivity.Does.SettingsClassName].Name;
-            return View(userActivity);
+            ViewBag.SettingsControllerName = Startup.ProfileTypes.Single(t=>t.FullName==userActivity.Does.SettingsClassName).Name;
+            _logger.LogWarning(userActivity.Does.SettingsClassName);
+            var dbset = _context.GetDbSet(userActivity.Does.SettingsClassName);
+            _logger.LogWarning(dbset.Any(i=>i.UserId == id).ToString());
+            return View(new UserActivityViewModel { 
+                Declaration = userActivity, 
+                HasSettings = dbset?.Any(ua=>ua.UserId==id) ?? false,
+                NeedsSettings =  userActivity.Does.SettingsClassName != null
+                } );
         }
 
         // GET: Do/Create
diff --git a/Yavsc/Helpers/WorkflowHelpers.cs b/Yavsc/Helpers/WorkflowHelpers.cs
index b3a4c58c..5d26be65 100644
--- a/Yavsc/Helpers/WorkflowHelpers.cs
+++ b/Yavsc/Helpers/WorkflowHelpers.cs
@@ -12,16 +12,13 @@ namespace Yavsc.Helpers
     {
         public static ISpecializationSettings  CreateSettings (this Activity activity, string userId) {
             if (activity.SettingsClassName==null) return null;
-            var ctor = Startup.ProfileTypes[activity.SettingsClassName].GetConstructor(System.Type.EmptyTypes);
+            var ctor = Startup.ProfileTypes.Single(t=>t.FullName==activity.SettingsClassName).GetConstructor(System.Type.EmptyTypes);
             if (ctor==null) return null;
             ISpecializationSettings result = (ISpecializationSettings) ctor.Invoke(null);
             result.UserId = userId;
             return result;
         }
-        public static bool HasSettings (this UserActivity useract, ApplicationDbContext dbContext) {
-            ISpecializationSettings candidate = CreateSettings(useract.Does,useract.UserId);
-            return candidate.ExistsInDb(dbContext);
-        }
+
         public static List<PerformerProfile> ListPerformers(this ApplicationDbContext context, string actCode)
         {
             return context.Performers
diff --git a/Yavsc/Models/ApplicationDbContext.cs b/Yavsc/Models/ApplicationDbContext.cs
index 6e533671..ffa33888 100644
--- a/Yavsc/Models/ApplicationDbContext.cs
+++ b/Yavsc/Models/ApplicationDbContext.cs
@@ -26,6 +26,8 @@ namespace Yavsc.Models
     using Musical.Profiles;
     using Workflow.Profiles;
     using Drawing;
+    using System.Collections.Generic;
+    using Yavsc.Attributes;
 
     public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
     {
@@ -51,8 +53,15 @@ namespace Yavsc.Models
                 if (et.ClrType.GetInterface("IBaseTrackedEntity")!=null)
                 et.FindProperty("DateCreated").IsReadOnlyAfterSave = true;
             }
+                
         }
         
+        public IQueryable<ISpecializationSettings> GetDbSet(string settingsClassName)
+        {
+            var dbSetPropInfo = Startup.UserSettings.SingleOrDefault(s => s.PropertyType.GenericTypeArguments[0].FullName == settingsClassName ) ;
+            if (dbSetPropInfo == null) return null;
+            return (IQueryable<ISpecializationSettings>) dbSetPropInfo.GetValue(this);
+        }
         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {
             optionsBuilder.UseNpgsql(Startup.ConnectionString);
@@ -274,6 +283,7 @@ namespace Yavsc.Models
 
          public DbSet<HairPrestation> HairPrestation { get; set; }
 
+         [ActivitySetting]
          public DbSet<BrusherProfile> BrusherProfile { get; set; }
          
 
diff --git a/Yavsc/Resources/Yavsc.Resources.YavscLocalisation.resx b/Yavsc/Resources/Yavsc.Resources.YavscLocalisation.resx
index aa101278..86725436 100644
--- a/Yavsc/Resources/Yavsc.Resources.YavscLocalisation.resx
+++ b/Yavsc/Resources/Yavsc.Resources.YavscLocalisation.resx
@@ -400,6 +400,8 @@
   <data name="Yavsc.Models.Musical.Profiles.DjSettings"><value>Paramètres Dj (le compte SoundCloud.com)</value></data>
   <data name="Yavsc.Models.Musical.Profiles.FormationSettings"><value>Paramètres formation (les partenaires)</value></data>
   <data name="Yavsc.Models.Musical.Profiles.GeneralSettings"><value>Paramètres généraux (visibilité et présentation)</value></data>
+  <data name="Yavsc.Models.Haircut.BrusherProfile"><value>Paramètres coiffeur: tarifs, disponibilité</value></data>
+  
   <data name="Yes"><value>Oui</value></data>
   <data name="YouNeedToBeAuthenticatedIOToContact"><value>Vous devez vous authentifier pour pouvoir demander un devis
       à un préstataire.</value></data>
diff --git a/Yavsc/Startup/Startup.OAuthHelpers.cs b/Yavsc/Startup/Startup.OAuthHelpers.cs
index c9c45dd5..154cce8c 100644
--- a/Yavsc/Startup/Startup.OAuthHelpers.cs
+++ b/Yavsc/Startup/Startup.OAuthHelpers.cs
@@ -18,8 +18,10 @@ namespace Yavsc
     {
         private Client GetApplication(string clientId)
         {
-            var dbContext = new ApplicationDbContext();
-            var app = dbContext.Applications.FirstOrDefault(x => x.Id == clientId);
+            Client app=null;
+            using (var dbContext = new ApplicationDbContext()) {
+             app = dbContext.Applications.FirstOrDefault(x => x.Id == clientId);
+            }
             return app;
         }
         private readonly ConcurrentDictionary<string, string> _authenticationCodes = new ConcurrentDictionary<string, string>(StringComparer.Ordinal);
diff --git a/Yavsc/Startup/Startup.Workflow.cs b/Yavsc/Startup/Startup.Workflow.cs
index 64a6b287..3b246bcc 100644
--- a/Yavsc/Startup/Startup.Workflow.cs
+++ b/Yavsc/Startup/Startup.Workflow.cs
@@ -1,6 +1,11 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
 using Microsoft.AspNet.Builder;
+using Microsoft.Extensions.Logging;
+using Yavsc.Models;
+using YavscLib;
 
 namespace Yavsc
 {
@@ -10,15 +15,16 @@ namespace Yavsc
         /// Lists Available user profile classes,
         /// populated at startup, using reflexion.
         /// </summary>
-        public static  Dictionary<string,Type> ProfileTypes = new Dictionary<string,Type>() ;
-        
+        public static List<Type> ProfileTypes = new List<Type>() ;
+        public static List<PropertyInfo> UserSettings = new List<PropertyInfo> ();
+
         /// <summary>
         /// Lists available command forms. 
         /// This is hard coded.
         /// </summary>
         public static readonly string [] Forms = new string [] { "Profiles" , "HairCut" };
 
-        private void ConfigureWorkflow(IApplicationBuilder app, SiteSettings settings)
+        private void ConfigureWorkflow(IApplicationBuilder app, SiteSettings settings, ILogger logger)
         {
             System.AppDomain.CurrentDomain.ResourceResolve += OnYavscResourceResolve;
 
@@ -26,10 +32,32 @@ namespace Yavsc
                 foreach (var c in a.GetTypes()) {
                     if (c.IsClass && !c.IsAbstract &&
                         c.GetInterface("ISpecializationSettings")!=null) {
-                        ProfileTypes.Add(c.FullName,c);
+                        ProfileTypes.Add(c);
                     }
                 }
             }
+                foreach (var propinfo in typeof(ApplicationDbContext).GetProperties()) {
+                    foreach (var attr in propinfo.CustomAttributes) {
+                        if (attr.AttributeType.FullName == "Yavsc.Attributes.ActivitySettingAttribute") {
+                            // bingo
+                            if (typeof(IQueryable<ISpecializationSettings>).IsAssignableFrom(propinfo.PropertyType))
+                            {
+                                logger.LogInformation($"Paramêtres utilisateur déclaré: {propinfo.Name}");
+                                UserSettings.Add(propinfo);
+                                
+                            } else 
+                                // Design time error
+                                {
+                                    logger.LogCritical(
+$@"la propriété {propinfo.Name} du contexte de la
+base de donnée déclare être un refuge de paramêtre utilisateur
+du workflow, mais l'implemente pas l'interface IQueryable<ISpecializationSettings>,
+Elle est du type {propinfo.MemberType.GetType()}");
+                                    throw new NotSupportedException("invalid ActivitySettingAttribute on property from dbcontext");
+                                }
+                        }
+                    }
+                }
         }
         public static System.Reflection.Assembly OnYavscResourceResolve (object sender,  ResolveEventArgs ev)
         {
diff --git a/Yavsc/Startup/Startup.cs b/Yavsc/Startup/Startup.cs
index c2f0eb16..7cd33c34 100755
--- a/Yavsc/Startup/Startup.cs
+++ b/Yavsc/Startup/Startup.cs
@@ -335,7 +335,7 @@ namespace Yavsc
             ConfigureOAuthApp(app, SiteSetup);
             ConfigureFileServerApp(app, SiteSetup, env, authorizationService);
             ConfigureWebSocketsApp(app, SiteSetup, env);
-            ConfigureWorkflow(app, SiteSetup);
+            ConfigureWorkflow(app, SiteSetup, logger);
             app.UseRequestLocalization(localizationOptions.Value, (RequestCulture) new RequestCulture((string)"fr"));
             app.UseSession();
   
diff --git a/Yavsc/ViewModels/WorkFlow/EstimateEdition.cs b/Yavsc/ViewModels/Workflow/EstimateEdition.cs
similarity index 79%
rename from Yavsc/ViewModels/WorkFlow/EstimateEdition.cs
rename to Yavsc/ViewModels/Workflow/EstimateEdition.cs
index f25ec028..fd936c3a 100644
--- a/Yavsc/ViewModels/WorkFlow/EstimateEdition.cs
+++ b/Yavsc/ViewModels/Workflow/EstimateEdition.cs
@@ -1,6 +1,6 @@
 using Yavsc.Models.Billing;
 
-namespace Yavsc.ViewModels.WorkFlow
+namespace Yavsc.ViewModels.Workflow
 {
     public class EstimateEdition
     {
diff --git a/Yavsc/ViewModels/Workflow/UserActivityViewModel.cs b/Yavsc/ViewModels/Workflow/UserActivityViewModel.cs
new file mode 100644
index 00000000..87045d85
--- /dev/null
+++ b/Yavsc/ViewModels/Workflow/UserActivityViewModel.cs
@@ -0,0 +1,11 @@
+using Yavsc.Models.Workflow;
+
+namespace Yavsc.ViewModels.Workflow
+{
+    public class UserActivityViewModel
+    {
+         public UserActivity Declaration { get; set; }        
+         public bool NeedsSettings { get; set; }
+         public bool HasSettings { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/Yavsc/Views/Do/Details.cshtml b/Yavsc/Views/Do/Details.cshtml
index b54804c4..e6fbdad9 100644
--- a/Yavsc/Views/Do/Details.cshtml
+++ b/Yavsc/Views/Do/Details.cshtml
@@ -1,4 +1,4 @@
-@model UserActivity
+@model UserActivityViewModel
 
 @{
     ViewData["Title"] = SR["Details"];
@@ -7,20 +7,24 @@
 <h2>@ViewData["Title"]</h2>
 
 <div>
-    <h4>Détails de votre activité @Model.DoesCode</h4>
+    <h4>Détails de votre activité en <em>@Model.Declaration.Does.Name</em></h4>
     <hr />
     <dl class="dl-horizontal">
         <dt>@SR["Activity"]</dt>
-        <dd>   @Html.DisplayFor(m=>m.Does)
+        <dd>   @Html.DisplayFor(m=>m.Declaration.Does)
           @if (ViewBag.HasConfigurableSettings) {
-              <a asp-controller="@ViewBag.SettingsControllerName" asp-action="Index" >
-                  [@SR["Manage"] @SR[Model.Does.SettingsClassName]]
+              <a asp-controller="@ViewBag.SettingsControllerName" asp-action="Index" class="btn btn-default">
+                  @SR[Model.Declaration.Does.SettingsClassName]
+
+                NeedsSettings: @Model.NeedsSettings
+                HasSettings:  @Model.HasSettings
+
               </a>
             }
         </dd>
     </dl>
 </div>
 <p>
-    <a asp-action="Edit" asp-route-id="@Model.UserId" asp-route-activityCode="@Model.DoesCode">Edit</a> |
+    <a asp-action="Edit" asp-route-id="@Model.Declaration.UserId" asp-route-activityCode="@Model.Declaration.DoesCode">Edit</a> |
     <a asp-action="Index">Back to List</a>
 </p>
diff --git a/Yavsc/Views/Do/Index.cshtml b/Yavsc/Views/Do/Index.cshtml
index ee411b60..68f5fb09 100644
--- a/Yavsc/Views/Do/Index.cshtml
+++ b/Yavsc/Views/Do/Index.cshtml
@@ -13,6 +13,7 @@
     <tr>
         <th>@SR["Activity"]</th>
         <th>@SR["Weight"]</th>
+        <th>@SR["Settings"]</th>
     </tr>
     
 @foreach (var item in Model) {
@@ -21,6 +22,8 @@
         </td>
         <td> @item.Weight
         </td>
+        <dt>
+        </dt>
         <td>
             <a asp-action="Edit" asp-route-id="@item.UserId" asp-route-activityCode="@item.DoesCode">Edit</a> |
             <a asp-action="Details" asp-route-id="@item.UserId" asp-route-activityCode="@item.DoesCode">Details</a> |
diff --git a/Yavsc/Views/_ViewImports.cshtml b/Yavsc/Views/_ViewImports.cshtml
index 0ad88fbb..c2b8be1a 100755
--- a/Yavsc/Views/_ViewImports.cshtml
+++ b/Yavsc/Views/_ViewImports.cshtml
@@ -29,6 +29,7 @@
 @using Yavsc.ViewModels.Auth;
 @using Yavsc.ViewModels.Administration;
 @using Yavsc.ViewModels.Relationship;
+@using Yavsc.ViewModels.Workflow;
 
 @inject IViewLocalizer LocString
 @addTagHelper "*, Microsoft.AspNet.Mvc.TagHelpers"
diff --git a/YavscLib/Workflow/ISpecializationSettings.cs b/YavscLib/Workflow/ISpecializationSettings.cs
index 10f33697..6c6aa35f 100644
--- a/YavscLib/Workflow/ISpecializationSettings.cs
+++ b/YavscLib/Workflow/ISpecializationSettings.cs
@@ -3,6 +3,5 @@ namespace YavscLib
     public interface ISpecializationSettings
     {
         string UserId { get ; set ; }
-        bool ExistsInDb(object dbContext);
     }
 }
\ No newline at end of file