Use
Once a business event has begun or is given the status firmly booked, you can perform follow-up activities for it.
Prerequisites
Features

The above activities depend on the procedure settings you make in Customizing for Training and Event Management under Recurring Activities ® Follow-Up Processing.
This procedure defines:
If you want to define a special procedure for a particular event type, you can do so using the Procedure infotype 1030.

A business event with a historical record flag can no longer be changed in any way. Historically recording is irrevocable.

The above-mentioned actions are only carried out for bookings with normal or essential priority, not for waiting-list bookings.
Result

Historically recorded business events do not feature in the business event catalog.
See also:
Following Up a Business Event Procedure (Infotype 1030)