1.  Within the Event page editor, on the Event Settings tab, the Allow To Edit Bidder # must be set to YES in order to add or edit bidder numbers.

2.  Check the Auction Bidders grid to find the highest bidder number assigned so far. You will be using the next one to assign to your event attendee.

3.  Bidder numbers can then be added by clicking on the edit icon from the Event Attendance grid.

4.  Bidder numbers can only be added one at a time, not in a batch.