Go to Divisions from your User Home page. Be sure the correct season and competition are selected. Click on by the appropriate division. Click on Add Teams to Division. By default only the teams in the same play level (age group, gender, level of play) will be displayed in the selection list. You can select from all of the teams in the league if you want teams from outside the play level. You can select multiple teams by holding down the Ctrl key (or Apple key on a Mac) as you click. Teams previously added to the division will not be displayed.
When you have selected the teams, click on . A list of the teams in that division will be displayed. You can edit or remove a team from the division by clicking on the appropriate button next to the team on the Divisions page.