You can add and remove fields made available to your league by associated clubs, this will help limit the fields that load in your schedule.
Click on the LEAGUE tab on the top menu bar. Then select the club that owns the fields you want to add or remove from your event from the list of Associated Clubs.
On the club detail page go to the club fields tab. Then select the league you wish to manage the fields for.
To remove a field click on the red X next to the field. To remove all fields click the Remove Club Fields from Event link at the top of the page.
To add a field select a field from the drop down and hit the add to event button.