Shedul is cloud based and will there for print on any printer or work with any device that is compatible with your computer.
Ask your printer people to set up the printer for you and adjust printer settings to match the printer margins/paper size. Whilst printing, you can also remove the headers and footers so the receipts are more condensed.
The printer usually connects to the computer and the till usually connects to the printer, so when a receipt is sent to print, the till pops open.
Tip: As Shedul has the option to send receipts via email so you can go paper free if you choose and save some extra pennies by getting a lockable cash tin.