Pick one of each seed. How ever many points as that team scores, is how many points you get. As long as that team keeps winning, you keep scoring points. You even get the teams’ points in a loss. So even though your 16 seed (probably) will lose first round, you still want them to score as many points as possible.
The only exception to this rule is the championship game, where the winning team will be awarded double the points that they scored.
For any questions or clarifications email email@example.com.