Hi Megazip, the purpose o the public folder just as the name says, is to give public access to all that have access to the network. If you want to limit read and write permissions, you can create a private share with that conditions.
I know i can make shares with limit access, but i don’t want users to delete files (accidentally).
Make a secured backup folder of those files on the MBL or on another drive. I know that’s using double the space but…a man’s gotta do what a man’s gotta do!