That all depends on what else you’re serving them with and whether or not you want them to be just an appetizer, or the main event. For an appetizer that will be served alongside other snacks, 1-2 per person should be fine. If it’s the only appetizer available, up that to 2-3 per person. If the charcuterie is meant to act as a full meal (or if you’re going to be grazing for longer than a few hours), you’ll want closer to 4-6 skewers per person.