The three default groups (anonymous, registered, and admin) can be added to freely as needed for the site. Groups can inherit other groups' permissions, to simplify access management.
On this #tikiexpresstutorial, using #tiki19 I’ll show you:
How to enable a feature from the Control Panels
How to enable a Global Feature from the features panel
How to enable an Interface feature
A quick overview of the Programmer features
And where to look for feature options