Update a store's primary "Hero" image or add additional images to a store as a Store Manager.
Begin by clicking the store drop-down and navigating to "Media".
Once in the media section, click on "Pick Images" to the right.
Upload your image by either dragging & dropping it into the specified dialogue box or by uploading one from your computer or any of the other offered services.
Once you have uploaded your image, you are all set!
Please Note: If more than one image is uploaded, the main image will be the one furthest to the left-hand side of the screen.