Avia Page Builder – Block / Hide Editor (user) to use speific Avia function.

Dear Sir,

I have two questions :

1. Can I block / hide Editor (user) to use speific Avia Page Builder functions? Like the Editor can not see the icon of Tab, Post Silder … etc function.

2. Is that one license is for one domain / one client usage? Can I give the CMS backend to him / her to admin by themselves?

Thanks (=