Users
On the Users page in the User section of the menu, you are able to see all your back office.
On this page, you can also create new user accounts, by simply clicking "Add new users" and fill in the required information. Your new user will then receive an email, through which they have to create their password to log in.
In case you want to de-activate a user, simply click the name of the user, click Edit, and then Deactivate. The user will then no longer be able to log in to the system.