Fixate folders

Hello,

I am trying to fixate some folders withing a shared folder so that the
users cannot delete or move them (accidentally) into another folder. I
have been trying several things (adjusting rights) but just as it seems
to work, I can't move one folder into another one but it has moved the
underlying folders and files (users must have full access to those ones
because they work with them). So I just need a solution to make sure the
folders (with their files) cannot be moved.

Thanks in advance,

Arno Mühren