These are the steps to upload this logo to your invoice:
Go to Admin > Invoice Setup then click on "Choose File" to select the file, then "Upload" to upload the file to eBillity's servers. The logo dimensions must be 170 (width) x 70 (height) pixels.
Below that you will see your Invoice Templates, just select a template and click on the checkbox "Show Logo" if it is not already marked. Click on the "Save" button to save your Invoice Template.
That’s it! Your invoices will now have your logo on them.