The Edit Permissions window allows you to change the permissions for the specified login.
Logins belonging to the sysadmin role on the SQLDM Repository have SQLDM Administrator privileges and you cannot edit or delete the login.
To Enable/Disable Login Permissions
You can toggle non-system, SQLDM login permissions by checking and clearing the associated check box in the Enabled column.
Select the appropriate permission level for the login. You can select View, Modify, or Administrator permissions.
The Comments field allows you to enter additional information about the login. This information appears in the Comment column on the Application Security window.