The seating numbers change when setting preferred seats for the HUD. For most sites, seat 1 is in the top right corner, and the numbers go clockwise around the table. Here is an example numeric seating for a 9max table:
And here is a 6max table:
These seating position numbers are true for most sites, please consult the PokerTracker Site Configuration Guide for the site you are configuring to confirm. It's important to know which seat you sit at so PokerTracker 4 can always place your HUD correctly when you sit down at a table.
Below are some of the more common sites that use different seating rules and an explaination of each:
Merge: The first seat is at the far left:
Ongame: The first seat starts just above 9 o'clock