As I understand it, printers go into groups. And the groups are associated with particular categories of items. So you could have several printers in a 'kitchen' group, all of which print out ordered items if they are in the 'food' category, but not if they are in the 'drinks' category. And then you can have another group of printers called 'bar', which can be associated with the 'drinks' items. So the answer depends on what you want to happen - if you want the two printers to print out the same information, put them both in the same group. If you want them to print different categories of items, create two different groups and put one printer in each group. What you can't do, I think, is have more than one group of printers associated with a particular category of item.