To access the Team Management page, click on the icon next to Support on the top right corner of your Sportshub page, then click on Organizations.
On the left hand side menu, look for Leagues category. Underneath you will see all the leagues which you can edit.
Select the league you wish to Edit. You will now see that you can Remove the existing teams, as well as Add new teams. Pay attention to the Scorebar Name of teams that you add, since that name will be displayed in the video, on the scorebar.