[Zope] Change th Mange-Interface of Zope

Hello, i'm new to Zope. I think i have a faq-question, but i found no faq. Where could i find one? Is there any possibilty to change to manage interface of Zope. I want to prevent some users of delete or changing the user accounts (at least the ones of the other users). Additional i want to create a workspace where the users are only allowed to do things they need to do but it should also be possible to add easily more features (of the Zope interface e.g. they dont need to add Scripts, but if one does it should be easy to allow this to him) or hide them.