diff --git a/src/main/java/org/example/Administration.java b/src/main/java/org/example/Administration.java
index c9e5d90..a27384c 100644
--- a/src/main/java/org/example/Administration.java
+++ b/src/main/java/org/example/Administration.java
@@ -223,6 +223,64 @@ public class Administration {
         }
         return true;
     }
+    public boolean rightPrefix(String userId, int i)
+    {
+        switch (i){
+        case 1:
+            if(userId.startsWith("S"))
+            {
+               return true;
+            }
+            else if(userId.startsWith("s"))
+            {
+                System.out.println("The ID needs to start with a capital S!");
+                return  false;
+            }
+            else if(!userId.startsWith("S"))
+            {
+                System.out.println("The ID needs to start with a capital S!");
+                return false;
+            }
+            break;
+        case 2:
+            if(userId.startsWith("A"))
+            {
+                return true;
+            }
+            else if(userId.startsWith("a"))
+            {
+                System.out.println("The ID needs to start with a capital A!");
+                return  false;
+            }
+            else if(!userId.startsWith("A"))
+            {
+                System.out.println("The ID needs to start with a capital A!");
+                return false;
+            }
+            break;
+        case 3:
+            if(userId.startsWith("P"))
+            {
+                return true;
+            }
+            else if(userId.startsWith("p"))
+            {
+                System.out.println("The ID needs to start with a capital P!");
+                return  false;
+            }
+            else if(!userId.startsWith("P"))
+            {
+                System.out.println("The ID needs to start with a capital P!");
+                return false;
+            }
+            break;
+
+            default:
+                System.out.println("Error");
+            break;
+        }
+        return false;
+    }
 
 }