You click on the image in the editor, hit the Link icon, and then write in the url of your project?
Yeah, that's how I did it, I think.
But you need a URL in the first place for the image?
Try looking at this: https://forums.rpgmakerweb.com/index.php?threads/how-to-insert-a-link-in-an-image.38993/
Separate names with a comma.