How can I restore my folder if it was deleted by another user?

Hello, Community/Support,

I am just in the proccess to change from Dropbox to NortonZone because I care about my IP of the files.

Currently I am testing different scenarios with my NZ-shares and I have the following problem:

 

1) I shared multiple folders with some test-users

2) one of my users deleted a folder with all its subfolders/files.

 

Question now:

How can I restore these folders/files as the owner of the share? Or is there a way to give the users just read-only rights?

In Dropbox I can simply click on "undo" but in NZ this is only available if I deleted the folder by myself.

What can I do in this scenario?