Category image is the cover image of the category as shown on your web or mobile catalog.
Select a category from Catalog Bar CMS and click on the field “Click here to select a file from media library” under the Step 2 section on the right side of the page.
Select an image from the “Media Library”. You may upload some images here if you don’t have any images in your Media Library.
The category image is automatically saved once you select an image from the Media Library. You may navigate to your web or mobile catalog to see the reflected changes.