In order to add your company’s logo to the automatic PDF invoice that your registrants will receive when they register for your event, the only section you really need to edit is your Images & Logos.
Make sure you upload the image that you would like to appear in the invoice as your logo under Image Use. The last image that you’ve selected to be your logo (even if there are more than one with that qualification) will automatically be designated as such. This is the image that will show up in that little left-hand box on the top of your site. It is also the image that will be added to your PDF invoice.
To confirm that the image has been applied to the invoice, simply go into Payment Options (after you’ve selected the image to be your logo, and in the third column (entitled Invoice Options), preview what your invoice will look like.