How can I control the order of images in the Gallery Panel?

The Gallery Panel is a Deal Layout panel that allows users to upload png, jpg, and pdf file types.

Images uploaded to the Gallery Panel cannot be reordered. To control the order, the images must be uploaded in the desired order. 

The first image that is uploaded to the Gallery Panel will be used as the thumbnail image for the deal. There is not a way to re-order which image comes first without deleting and re-uploading in the desired order.

PDF's can be uploaded to the Gallery Panel. The first page of the PDF will be displayed as an image.