When creating a team from the administrative side of LeagueApps you need to be careful about how you set up the team. If it's a team that you only want to use administrative purposes, you can add that team by clicking add a team in the team tab of the program dashboard. However, if you want your participants to be able to register as a player for the team you will need to assign a coach/captain
Select Manage > All Programs
Enter a specific program's dashboard and select the Team tab. Select Add Team.
Fill out team information and select Create Team. Pay close attention to the instructions on the page.
Learn how to assign a coach/captain
to your new team here.