Can you limit the number of steps to checkout in the MarketPress plugin?


I currently have the appointments+ plugin working through the MarketPress+ plugin and had a question about the checkout process.

There is currently a 3 step process in the appointments+ plugin:

1. Choose date
2. press confirm button
3. press buy now button

There is then a 5 step checkout process for the MarketPress plugin:

1. Review Cart
2. Shipping
3. Checkout
4. Confirm
5. Thank you

As these are appointments (digital products) that we are selling we want to stream line this process. Is there anyway of removing say the shipping and checkout process from the MarketPress Plugin?