On the page you're editing, click on the Snippets icon in the WYSIWYG Toolbar.
Select Image Overlay and click Insert.
Select the default image and delete it.
Click the Insert/Edit Image icon in the WYSIWYG Toolbar.
Click on the search file icon to locate and insert the image you'd like to use.
After the image has been selected, add an Alternative description and/or Image title if needed.
If neither are needed, click the checkbox to indicate that the Image is decorative.
After the image has been inserted into the image overlay snippet, click it and then
click the Insert/Edit Link icon in the WYSIWYG Toolbar.
If you are linking to a page within your site, use the search file icon to locate the page. Then click insert to add the page's dependency tag. Click Save.
If you are linking to an external page, type in the full URL in the URL field (ex: https://www.utah.edu). Then click Save.
Save and publish the page to view changes.