The Reserved seats are just sections where LPU members can buy. Unfortunately, I think it's on a first come first served basis on seating arrangements. When I bought my tickets for the concert in Toronto I had no idea of what the seats where going to be. I only found out after I received the tickets from TopSpin.
Luckly I got pretty good seats so I am happy. I have heard from others...not so much luck.
Hope this helps!
Nicholas from Toronto!