diff --git a/CarCenter/CarCenterDataModels/Models/IEmployeeModel.cs b/CarCenter/CarCenterDataModels/Models/IEmployeeModel.cs
new file mode 100644
index 0000000..887ed22
--- /dev/null
+++ b/CarCenter/CarCenterDataModels/Models/IEmployeeModel.cs
@@ -0,0 +1,10 @@
+namespace CarCenterDataModels.Models
+{
+    public interface IEmployeeModel : IId
+    {
+        string EmployeeFIO { get; }
+        string Specialization { get; }
+        int ManagerId { get; }
+        public Dictionary<int, ISaleModel> EmployeeSale { get; }
+    }
+}
diff --git a/CarCenter/CarCenterDataModels/Models/IEmpployeeModel.cs b/CarCenter/CarCenterDataModels/Models/IEmpployeeModel.cs
deleted file mode 100644
index c90b1d1..0000000
--- a/CarCenter/CarCenterDataModels/Models/IEmpployeeModel.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-namespace CarCenterDataModels.Models
-{
-    public interface IConferenceModel : IId
-    {
-        string ConferenceName { get; }
-        DateTime StartDate { get; }
-        int OrganiserId { get; }
-        public Dictionary<int, IMemberModel> ConferenceMembers { get; }
-    }
-}
diff --git a/CarCenter/CarCenterDataModels/Models/IManagerModel.cs b/CarCenter/CarCenterDataModels/Models/IManagerModel.cs
index ea04403..d382d1b 100644
--- a/CarCenter/CarCenterDataModels/Models/IManagerModel.cs
+++ b/CarCenter/CarCenterDataModels/Models/IManagerModel.cs
@@ -1,11 +1,11 @@
 namespace CarCenterDataModels.Models
 {
-    public interface IOrganiserModel : IId
+    public interface IManagerModel : IId
     {
-        string OrganiserFIO { get; }
-        string OrganiserPassword { get; }
-        string OrganiserLogin { get; }
-        string OrganiserEmail { get; }
-        string OrganiserNumber { get; }
+        string ManagerFIO { get; }
+        string ManagerNumber { get; }
+        string ManagerLogin { get; }
+        string ManagerEmail { get; }
+        string ManagerPassword { get; }
     }
 }
diff --git a/CarCenter/CarCenterDataModels/Models/IPreSaleWorkModel.cs b/CarCenter/CarCenterDataModels/Models/IPreSaleWorkModel.cs
index 5e4a9a0..d94b3a7 100644
--- a/CarCenter/CarCenterDataModels/Models/IPreSaleWorkModel.cs
+++ b/CarCenter/CarCenterDataModels/Models/IPreSaleWorkModel.cs
@@ -1,10 +1,11 @@
 namespace CarCenterDataModels.Models
 {
-    public interface IMealPlanModel : IId
+    public interface IPreSaleWorkModel : IId
     {
-        string MealPlanName { get; }
-        double MealPlanPrice { get; }
-        int OrganiserId { get; }
-        public Dictionary<int, IMemberModel> MealPlanMembers { get; }
+        string PreSaleWorkType { get; }
+        double PreSaleWorkPrice { get; }
+        int ManagerId { get; }
+        public Dictionary<int, ISaleModel> PreSaleWorkSale { get; }
     }
 }
+}
diff --git a/CarCenter/CarCenterDataModels/Models/ISaleModel.cs b/CarCenter/CarCenterDataModels/Models/ISaleModel.cs
index 5f9d6ad..185e3d3 100644
--- a/CarCenter/CarCenterDataModels/Models/ISaleModel.cs
+++ b/CarCenter/CarCenterDataModels/Models/ISaleModel.cs
@@ -2,8 +2,8 @@
 {
     public interface ISaleModel : IId
     {
-        string SaleDate { get; } 
+        DateTime SaleDate { get; } 
         string SalePrice { get; }
-        int PreSaleWorkId { get; }
+        int ManagerId { get; }
     }
-}
+}
\ No newline at end of file