most items read only - can't edit despite being root super user

Hi there

I am new to Aras.

I can't seem to edit much besides the existing product and part lists. I cant edit item types, or permissions or identities, most of these are "read only". I am logged in as the root super user.

I am wanting to add another property to a part as in the demo video.

Please help :(

Thanks

Heidi