If you want to set a different image as header for each page of your website, follow these steps:
- Go to Dashboard -> Pages -> All Pages
- Select the page you want to edit, you will redirect to page editor
- Scroll down to bottom, you will find a box titled “Page header Section”
- Click on “Add or Upload File” from “Header Image”
- Now, Scroll to top to “Publish” metabox
- Click on “Update” to save the changes.