If you want to change/edit information that is the same for the entire division.
In this example it's changing the time.
Go to Menu > Manage > Schedules/Charts > Surfaces Scheduler or Calendar.
Select the entire league/divison.
Click on the Pencil to edit.
Change the time.
Save.
* DO NOT CHANGE OTHER INFORMATION AS IT IS CHANGING THE INFORMATION FOR ALL MATCHES SELECTED. ONLY CHANGE THE INFORMATION THAT WILL BE THE SAME FOR ALL.
How to select ALL of the league/division you wonder?
Here is a video with some tricks to select multiple at the same time and edit.