WhosComing expects one record per person. If you are signing up for someone else or bringing a guest, simply sign them up with their own record. That means clicking "Register as a New User" and entering their name and email. This way, THEY will get the confirmation and reminder, and be more likely to show up. (If you don't have their email address, you can use your own. Duplicate emails are okay; names must be unique though.)
The system collects responses for questions like meal choices, business name, and other individual data. For this reason, EACH person needs their OWN record.
WhosComing is not like a wedding invite, where you simply indicate how many people in your party. Sorry.