Hide Directories & files from clients

Hi i have had a look on here and cant find exactly what i require. I would like to hide folders from the client when they access via FTP although keeping the folders still their for the system if possible or an alternative. I would like their ftp to look like image "mini ftp" as at the minute it looks like "current ftp" as the average use does not require these additional folder access. Ideally access to

• mail
• public_ftp
• public_html
• sub domains & domains should they be created in the root

Any help would be awesome! Cheers