I am building bit more on the couchcms demo site I made as doing abit for a new site I am doing but want to do it on the couchcms demo site I built first

I created a page where super admin can upload files from the admin panel in couchcms and it works perfect

The next bit is I need other staff members to sign up as admins and allow them access to the file-storage.php so they can upload files from the admin side/panel

I have added in simple access control addon in the addons folder and activated it in the kfunctions.php file but the part I am unsure on is how can the other staff members signup to be admins so they can login to the admin panel to upload files

Do I need to use the extended users add on?