Customizing Bookmark Access Rights

Hello,

Can i customizing Bookmark access rights? Our Bookmark Structure example is below; (Numbers are Bookmark names)

-(1)                                               

--(1.1)

--(1.2)

---(1.2.1)

---(1.2.2)

In this example, (1) Bookmark is Root Bookmark. (1.1) is sub-Bookmark of (1). 

(1.2.1) and (1.2.2) named Bookmarks are sub-Bookmark of (1.2)

And all of these Bookmarks are connected to one Collaborative Space.

I want to manage these Bookmarks differently. For example i want to do, design engineers only can create or save activities for Bookmark (1.2.1) and (1.2.2). 

In summary, i would like to manage Bookmark structure elements differently, but the only method I know is managing these rights in Space Member Management area. These Bookmarks connected to one Collaborative Space so i can not managing them differently.

Any advice is welcome. Thank you.