Go to the Division section and click on Auto-Fill teams tab, once here, click on the recalculate seed points button.
WARNING: Ensure that you have no empty spaces in your seeding before hitting the Recalculate button.
Once the teams are displaying, you will see a button below the accept applications to “Show Detailed List View”. This will bring up a list of teams in the division(s) with a replace button to the right of their name.
Once looking at the teams, click on the replace button for one of the teams you wish to flop on the schedule.
You will then be brought to the replace team window. In the drop-down labeled “Replace With” select the tea in which the team you elected on the previous page will be switching with. Once you have, made the selection in the drop-down, make sure to click the option “Automatically exchange these teams in the schedule - overwrite all games.” And click replace. This will flop the teams in the schedule and division. This will replace all matches past and future in your current league.