You have the ability to upload a logo for each exhibitor on your Exhibitors List. To do so you will click the edit icon in the Action column (the paper and pencil icon) within each exhibitor entry. Once on the edit screen for the exhibitor select the file from your computer to upload, and click Save at the bottom of the screen.
Please note the logo should be 294 x 84 px in a .jpg or .png format. Also, the file size cannot exceed 256 KB.