This is the maximum number of songs your clients may place in their requested songs shopping cart.  This will help you avoid getting a long list of songs to play.  

You can change the default number of requests by going here:

Log in to DJ Event Planner -> Website tools -> Guest Requests -> Request Limit   -  You can enter 0 to 300 as the maximum number of songs.  If necessary you can over-ride this default number within the event under Event Planning->Guest Requests