Firstly click on the cover page tab
Next, click on the logo option in the toolbar
You'll see a heading with the name "logo." Click on the "change image" button underneath
Note:
Accepted file formats are .jpeg, .jpg, and .png and the size must be < 4Mo.
If you have already uploaded a logo, uploading a new logo will replace the exisiting one (you cannot have two logos)
If you unhappy with your uploaded logo, you can press the delete icon next to the "change image" button
You can change the size of your logo but we recommend keeping it at 100% (default)