hide directorys for users with less rights

[blacky]

a friend of mine told me that it is possible to hide folders for "low right users" and make them visible when a "high right user" logs in.

but we both did not find where to configure this feature.

can anybody give us a hint how to configure this feature...

[rejetto]

(in expert mode)
menu > virtual file system > list protected items only for allowed users