Add the page tag : banner to the following page types.

• Volunteer
• Signup
• Donation

Then navigate to  ‘Settings and’ check the box for ‘Include in supporter nav’.
This will add the page as a homepage module.

To control the image that is displayed. Navigate to  [The Page] > Settings > ‘Feature content sliders’ and name the label ‘homepage’.

• Label: homepage
• Headline / Action text: (if different from page headline)
• Page to feature: (slug of the current page)
• Image: Upload your image