In this example optional extras are available.

The staff attendees can bring one Guest at a reduced price

In this example there is a discounted/free of charge rate which can only be purchased if the payers have the passcode (once they have logged in, they will need to enter a passcode in order to proceed with the booking for the discounted/free of charge rate)

2 delegate rates and no extras or guests.

In this example, the event is full but payers can add themselves to a waiting list

NB:  The waiting list function only works when there is only one attendee category.  Do not use when more than one attendee category exists.

In this example the prices are set at programme item level so that they are not shown on the event page.