Creating an admin account or making an existing account as admin is simple.

1. Kindly create (register) the account and take note of the account email
2. Login to with the default admin account and go to Manageusers
3. Locate the account you like to make as admin  and click on the "Make admin" button (You can use the search to easily locate a user)

That is all. when you login with the user account, it will display admin options.