You can ask a delegate if they are a member of a certain society, allowing them to select membership registration items.
From the Organisations section, select the tab titled ‘Add new organisation‘.
Add the details for the new organisation, leave the checkbox titled ‘Manage Membership List‘ unchecked and click Save.
Back in your event, under the ‘Orgs‘ tab, you can now select that organisation to be added to this event.
On registering for your event, a delegate will be able to select if they are a member of this organisation