If you need to add your team to collaborate on writing and managing your website or blog project, then you can use the users menu to add new users to your team.
Access backend admin cms, then click on Users menu - and you will see all user list in this area. for edit user you can click on username, and update password, username and others, for delete you can click delete user.
If you want to add new users, so you can click on add new user menu. then insert username, input password and select role for example user for Author, Editor and Admin.