How do I get Google Calendar to NOT email reminders to people with whom I have scheduled appointments?

I didn’t even know my Google Calendar was doing this until someone called me to ask about a message she received from Google Calendar reminding her about a meeting I had scheduled. Apparently if I put their email address in the scheduling slot of the calendar it emails them. I need to have that email address there so that my coworkers can follow up after the meeting—but I don’t want Google to send email reminders.