You mean the hidden notes? The notes are against punter IDs and there doesn't have to have been a meeting booked via AW for the SP to leave a note. Just any AW email contact.
From what I understand next to your AW ID, you have notes in red, yellow and green which other verified WGs can see.
But if you just phone up and agree to see a WG, there is no need to worry about them
At the same time I appreciate if you're the sort to send emails first and book online it could be a problem
Some WGs can be malicious and label genuine punters as TWs for the smallest of things
System seems flawed to me and very easy to abuse