Creating the Race
To use the results of a previous race, you must wait until the first race is completed before creating the second race. When creating the second race, select the Get Racers from Another Race option and select your first race as the race to import:

Set the Seeding Type
On the Start List tab (#3 across the top of the race) change the Seeding Type to Custom. Then select Time after 1 stage as the Seeding Order.

Scroll back up and click the Assign Racer Numbers button to assign racer numbers in the finish order of the previous race (and make sure to have entered the First # for each start group).

This will also assign an Order value for each racer, which will correspond to their position in the start chevron.