Booking made - so how do I take payment online?

SO just come across bookings and have it in mind for a sports masseuse to organise her schedule.  Availability is fine (though I'd like to limit days to locations) eg Monday is one location, Tuesday another etc.... However, can get around that, I think, however, I'm keen to allow payment to be made for the booking.  I can't see any way to do that or am I missing something?

Thanks

R