diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/SubOrdinateController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/SubOrdinateController.cs
new file mode 100644
index 0000000..58e64f0
--- /dev/null
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/SubOrdinateController.cs
@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+using WD7UVN_HFT_2023241.Logic;
+using System.Linq;
+using WD7UVN_HFT_2023241.Models;
+
+namespace WD7UVN_HFT_2023241.Endpoint
+{
+    [ApiController]
+    [Route("api/GetSubordinates")]
+    public class GetSubordinatesController : ControllerBase
+    {
+        public ILogicServices LogicServices { get; set; }
+
+        public GetSubordinatesController(ILogicServices LogicServices)
+        {
+            this.LogicServices = LogicServices;
+        }
+
+		[HttpGet("{id}")]
+		public IQueryable<Employee> GetSubordinates(int id)
+		{
+			return LogicServices.GetSubordinates(id);
+		}
+    }
+}
diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoUsesServiceController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoUsesServiceController.cs
new file mode 100644
index 0000000..4510c60
--- /dev/null
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoUsesServiceController.cs
@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+using WD7UVN_HFT_2023241.Logic;
+using System.Linq;
+using WD7UVN_HFT_2023241.Models;
+
+namespace WD7UVN_HFT_2023241.Endpoint
+{
+    [ApiController]
+    [Route("api/WhoUsesService")]
+    public class WhoUsesServiceController : ControllerBase
+    {
+        public ILogicServices LogicServices { get; set; }
+
+        public WhoUsesServiceController(ILogicServices LogicServices)
+        {
+            this.LogicServices = LogicServices;
+        }
+
+		[HttpGet("{id}")]
+		public IQueryable<Customer> WhoUsesService(int id)
+		{
+			return LogicServices.WhoUsesService(id);
+		}
+    }
+}
diff --git a/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoWorksInMaintainerTeamController.cs b/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoWorksInMaintainerTeamController.cs
new file mode 100644
index 0000000..b2ab188
--- /dev/null
+++ b/WD7UVN_HFT_2023241.Endpoint/Controllers/WhoWorksInMaintainerTeamController.cs
@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Mvc;
+using WD7UVN_HFT_2023241.Logic;
+using System.Linq;
+using WD7UVN_HFT_2023241.Models;
+
+namespace WD7UVN_HFT_2023241.Endpoint
+{
+    [ApiController]
+    [Route("api/WhoWorksInMaintainerTeam")]
+    public class WhoWorksInMaintainerTeamController : ControllerBase
+    {
+        public ILogicServices LogicServices { get; set; }
+
+        public WhoWorksInMaintainerTeamController(ILogicServices LogicServices)
+        {
+            this.LogicServices = LogicServices;
+        }
+
+		[HttpGet("{id}")]
+		public IQueryable<Employee> WhoWorksInMaintainerTeam(int id)
+		{
+			return LogicServices.WhoWorksInMaintainerTeam(id);
+		}
+    }
+}