So you can either use radio service or the local functions of the switches to manage the users, it
is advised to use the central identity management approach.
And here's some more advice for identity management.
Create a different account for every user.
Identify the user in the same center.
Create and apply a central password policy for all users.
And change the passwords periodically.
If you use local user management functions, you should follow the same policies, as I just explained.
However, it's much harder to manage the users and the policies because, you know.
Random.