Novel 6.5 zenworks 7

all my users currently have space restrictions on our shared drive (\\server\data\shared). the users never clean up their folders (surprisingly) and data just keeps getting added and then over quota. i go to console one and increase quotes and routinely go through the shared folder and delete youtube videos and non work related data. my questions are:

1. when i go through (from my admin login) and delete data off the shared drive does it "come off" the user that saved it quota?

2. is there a way to see what data a certain user is i can narrow down the users that are saving **** instead of work related data

thanks in advanced