Residenz Evil and Special Camping Neighboring Tents

Hello, I was on Wackens website, and they said if you want to guarantee tents of friends to be next to each other, I need to link my 2 Residenz Evil Tent tickets to the same account when booking and specifically request to be neighbors through the Ticketcenter. I did not see that option at booking and when I go to the ticketcenter, I see my 2 Residenz Evil purchases, but no option to request to be neighbors. Anyone know what to do to guarantee my 2 (2 person, temple) tents will be next to each other