Administrative privileges are a way of deciding who can make changes to important parts of the system. You can change which users have admin privileges and which ones don't. They are a good way of keeping your system secure and preventing potentially damaging unauthorized changes.
Click your name on the top bar, select
Click
Select the user whose privileges you want to change.
Click the label
Close the User Accounts window. The user's privileges will be changed when they next log in.
The first user account on the system is usually the one that has admin privileges. This is the user account that was created when you first installed the system.
It is unwise to have too many users with
Explain how admin privileges can be given to other people, or removed. Warn the reader about how it's unwise to have too many admins on a system.