When you are looking to give out a 'voucher' ie: a value to spend at your venue without taking payment this is best setup as Account in posBoss as it is Debit to your business.
In Accounts you can set a limit & choose to pay it off using the payment type Clear Balance which means you plan to deal with the financial aspect in your own way.
Vouchers in posBoss are designed for taking money from a customer to give credit. This has been kept separate so that you are able to easily track the financial credit you are holding for customers.
That being said...
Dealing with a discount voucher/flyer at payment can be dealt with in a couple of ways.
1. Discount or Hospo
If you don't need to track the vouchers, you can either use the discount function or make a partial payment to Hospo for the voucher amount when you are in the payment screen.
If you do want to track your discount vouchers you could set up an Account and assign the value of your discount vouchers to the account at payment.
When you want to settle the account, you can use the payment type called "Clear Balance /To Invoice" and settle it and remove the $$$ owed from the system, or alternatively, you could give the account a 100% discount. We recommend settling the account on a regular basis. You can print off an account summary before settling, if needed.
More on Accounts below: