diff --git a/Class_Diagram.md b/Class_Diagram.md
index aee1de5..5eb6f95 100644
--- a/Class_Diagram.md
+++ b/Class_Diagram.md
@@ -181,9 +181,16 @@ package Model <<Frame>> #bada55 {
 
   abstract class AbstractDie
   abstract class AbstractDieFace
-  interface IManager
   class Player
-
+  
+  interface IManager<T> $inprogress {
+    +Add(toAdd: T): T
+    +GetAll(): T[*]
+    +GetOneByName(name: string): T
+    +Update(before: T, after: T): T
+    +Delete(toDelete: T)
+  }
+  
   package Games #daf {
   
     class GameRunner $todo {
@@ -251,6 +258,7 @@ package Model <<Frame>> #bada55 {
   interface IManager<T> $inprogress {
     +Add(toAdd: T): T
     +GetAll(): T[*]
+    +GetOneByName(name: string): T
     +Update(before: T, after: T): T
     +Delete(toDelete: T)
   }