Hiding Collection from 'folder contents', Plone Classic

I got this question (from customer):

 can the collection folder be hidden and permission assigned to site admin/admin from content view of folder?

Which I assume means: Can a Collection (which is the default view of the folders, by the way) be hidden in /folder_contents, alternatively hidden for everybody except from admin.

I assume I can hide it with CSS ( tr.type-Collection {display:none;}, but is there other ways of doing it.

(hiding it with CSS might give two tr.even in a row).

point to



but I don't know where you can set the content types.