1. Once you select the event you wish to message with others on, you will click on the Message button.
2. Once you click on the Message button, you will be taken to this screen, where you will click on New Message.
3. From there you can choose to either message individuals, or to create a group message. To message an individual, you select the name of the person you wish to message.
4. Then, you will be taken to this screen, and can begin exchanging messages!
5. You can also find all of your messages on your Messages home screen.