Click on Events and then Add or Edit an Event. Enter the Entry Fee amount for this event in the lower/middle of the screen in the field marked as "Entry Fee". For example, enter "$3.00" to indicate that each entry for this event will be charged $3.00.
You can assign an entry fee amount to each event. This amount is used to calculate a total entry fee for each team. In the Teams Report and the Entries Report, you can also assign an Athlete Surcharge and a Team Surcharge.