You may need to re-seed the heat sheets and lane assignments after a workout or day of competition.

Select "Lane Assignments" from the Scheduling menu, circled in red in the screenshot below, and select the division(s) and workout(s) you need to adjust heat sheets for.

To update the heat schedule from the leaderboard, select "Update from Leaderboard", circled in red in the screenshot below.

The seeded order will change based on the current published state of the Leaderboard. You will need to hit "Update from Leaderboard" for each division, so be sure to repeat the process for all affected divisions.