PermissionsEX?

Ok so basically I just got this plugin because my server can't let deop people do anything, and so I just want the permission to let people only right click signs so if anyone would be genourous enough to send me the proper code or node, whatever it is lol:
permissions:
backends:
file:
type: file
file: permissions.yml
^^^^^^^^
That is what I have when I open it with Notepad ++ so please can someone send it to me all filled in and such or add my skype to help: GalaxyMaster13