Change compulsory checkout Fields in Marketpress

Hi,

Is it possible to change the compulsory checkout fields in Marketpress and also remove some fields entirely?

For instance my business is such that I don’t need to collect the address information by default for a large number of my clients. They often pay at time of appointment so I’d like to not make it compulsory. I want to keep the checkout process as minimal as possible for ease of use.

Additionally I don’t need to collect their telephone number again. I already collect it when they are making a booking in appointments so don’t really need to collect it again at the billing stage of checkout. Ideally I’d like the number collected by appointments + to automatically copy over so it still appears in an order invoice. Does it do this? I’ve made so many appointments recently my browser is remembering things I’m not sure it would for the first time user!

Many Thanks

Kieran