Important note: Media that is visible for a user does not get hidden when you add it to a folder that the user has no access to. The only thing hidden is the folder in the folder structure.
- Right click on a folder and choose Edit folder
- Click on the Access tab
- Give different users or groups different kinds of access to the folder
- Click on the save or save & close button
You can choose to give the same access to a subfolder. Then you click the box Include Subfolders.