Sign in with your ShuttleBot account that has "Manager" permissions, click on your name in the upper right and select "Users"
Click on "New Team Member"
Enter their First Name, Last Name, email and a default password. You can also select if the user is able to create other users by clicking on the checkbox next to " Check to make this users a manager (can create other users)".
Click "Create Member" to finalize the new users' account.