When a guest chooses to post a 'Message', a default photo is also displayed. A Host can remove these default photos, and upload selected photos.
- Click the cogwheel icon in the top right.
- In the settings, ensure 'Enable Message Post' is enabled.
- Click on 'Enable Message Post'. In the new popup edit the Background photos.
- Click the X to remove a photo, and click the 'Add' button to select a new photo.
- Click 'Save' in the popup, and 'Save' at the bottom of the settings window.