Party Poker seating arrangements

[thedarkman]

Just returned to this site after an absence of many, many years. At the risk of sounding dumb, can someone tell me how to alter the seating arrangements? If I play 4 tables I want the 2 at the top of my screen to seat me at the top and the 2 at the bottom to seat me at the bottom.
Been looking through reams of text from various sources including the site itself but can't figure it out.

Thanks.