To insert images in the header section of your chapters, you'll need to first set this up in your theme options. Here's what you need to do:
Navigate to the Chapter Heading section of your theme settings, in Formatting.
Check the "Chapter Image" box to enable Chapter Header Images.
Choose between using individual images for each chapter or the same image for every chapter.
*If you choose to upload a new image per chapter, you will add these images within your writing Editor using the image icon next to your Chapter Title.
You can make changes to your theme on the Formatting Tab by clicking the three dots next to the theme name and selecting “Edit” or “Edit as New Theme.”
For more details on how to set up or adjust your theme settings, you can refer to our tutorial on Creating a Custom Theme. It provides detailed instructions and tips on creating and modifying your theme.