This achievement requires you to view five gaming sessions you are currently singed up for.
If you look at the right of this solution, you should see five gaming sessions for TrueAchievements, join all five.
Head to the app, then head to the your current gaming sessions, wait a few seconds (this seems to be the case for most apps) then pop!
Quite a high ratio, so enjoy it while you can.
If there are only four or lower session, please comment on the solution and I'll make one, or do it yourself
Also, I'd suggest you leave these sessions after you get the achievement, as someone might accidentally give you a negative vote, and the staff on the website can't revoke this.
Edit : 28/06/2015 : You now apparently need to view the five sessions you are in, so you should do that if popping it in the overview page does not work.