You do not tune a broadhead to an arrow. You tune the two as a combination to the bow. You can tune the bow to shoot the arrow. You can also play with point weight, fletching type and size, etc to shoot from the bow wll. Tuning is really playing with the bow/arrow combination to get the best flight.
One of the best pieces of advice I can give you is to log onto
www.eastonarchery .com and download their Tuning Guide. It'll help with initial set-up and explain tuning from the basics of paper tuning all the way through fine tuning and broadhead tuning.