Does this mean that I can only send one at a time?

Do mean that I can only send one at a time or only get replies for only on filler of the form?

Hi, you can be notified each time your form is submitted, but the notification can only go to one recipient, the one that you specify in the Notification. If you want to add multiple recipients, you first need to upgrade to a paid plan(Bronze, Silver, or Gold): https://www.jotform.com/help/331-How-to-Upgrade-My-Account