Zero App - editor user permissions

Hi Balbooa,
I've created several Zero Apps to help a customer update some parts of their website (news, testimonials and events).

I only want the customer to create, edit and delete articles within these Zero Apps. The customer should -not- be allowed to edit any other pages (e.g. the home page).

Is there a tutorial, or post, which describes the best way to set up the permissions for a user, so they can only add / edit / delete specific zero apps?

Many thanks,

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