In the Calendar tab of the group that you want to add an event to, clickAdd an event.
In the Start a conversation area, click Event.
Enter an event name.
In the When area, select a date and time for your event.
To repeat the event, select Repeat. In the pop-up window, fill out how often you want the event to repeat and when you want the event to end.
Enter a place and description for the event.
In the Remind Me area, enable a reminder for the event.
Do one of the following:
From the Participants list, select a group of participants.
Enter the name or email of a participant into the Enter a name or email address field and then press Enter.
To import participants from your email contact list, click Import contacts.
Drag and drop participants from the Contacts area (only available when creating an event from the Start a conversation area) or click participants' names in the Contacts menu (only available when creating an event from the Calendar tab).
Select your notification preference from the drop-down list.