The Modify Recurring event action allows you to modify the particulars of previously created recurring event.
To modify a recurring event, follow these steps:
Click the Groups tab on the left navigation bar.
Click the Group Memberships icon. The Active Memberships page appears.
Select the group in which you would like to create a new event. The Group homepage appears.
Click on the Shared Calendar icon. The Shared Calendar page appears.
In the Monthly/weekly/Daily view page of the calendar, click the event you wish to modify. The Modify Event page appears. If the event you clicked is a recurring event, text is displayed identifying the event as a recurring event.
If you want to edit the recurrence properties associated with the event, click the Edit Recurrence Properties button. The Schedule a repeating event page appears.
Change the field(s) you want to modify, then click the Schedule Recurrence button at the bottom of the page.