You can have a second type of player for when customers book in using the online booking form.
Navigate to the settings option, and select the 'Branch Setup' wizard.
Cycle onto the 4th step - "Booking Details".
Scroll down and toggle the option 'Would you like to have a drop down for a second type of player?'
Type in what you want this to be called in the box below e.g 'Child', 'Concession' etc.
If you want to add additional details about what this player type is - you can type this in the box below and it will appear on the booking form e.g 'Players Aged 11 and Under'
Click Save at the bottom of the box.