Q: Under what circumstances can I mark an event participant as Optional?
If a member can participate in an event on a voluntary basis, the event organizer can mark the member as Optional. The member will carry an Optional tag in the invitation notification and can decide whether to participate in the event.
Q: How can I mark an event participant as Optional?
On the Edit Event page, select and hover the mouse over a participant you'd like to invite. Then click the person icon to mark the member as Optional for this event.