prepaid events, how to send and invoice and still ring up orders so we can have a window ticket?

[HoppinPoppin]

we have prepaid events and want to order as if it were an actual event.  in doing so the only way we know of is to ring it in as cash sale to cover the fee so we get a window ticket, that creates a double cash scenario, how do we run a window ticket without it charging it as a cash customer?

[Sam_400º]

Window ticket is a new term to me, but assuming it's just the KDS or printed ticket for the order? 

There are a couple of quick & easy options for this. 

Firstly you could just create a 100% discount button on the POS, hit that & it will reduce the order value to zero & keep your accounts right. Depending on how you use your category/item reporting this may be a good or bad thing - as each item you serve at the pre paid events will be shown within those numbers (number sold, not $ value). 

Second option is to use open tickets. Instead of completing the sale you can save each of the orders on the day as an open ticket. This will still send the order to a printer or KDS but not record the sale as complete, letting you go in at the end of the day & remove/void all of those open tickets. This will not record & $ value within your reports or the number of each item served.