How to pay booking.com as a host.

Hello,we are a new entrant for booking.com as we are new to this bussiness we have not been allocated for a (POS) as a result alot of costumers are unable to use there Credit cards at our site.we have been approached by customers thru booking.com but were unable to accomadate them.we would like to know how would you hold our bookings so that we can pay you for your services.we would like to know the mechanism of how booking.com will charge our entity once we have the POS services fully opertional.         Thanking you for your services