to change the logo you have to do this steps:

 

- go to "~/Library/Application Support/Presenter Report Templates/"

- right mouse click on "Report-1.template" and choose "Show Package Contents"

- open the "images" folder

- rename existing "Logo.png" in "Logo_original.png" and "Logo_print.png" in "Logo_print_original.png"

    - rename your wanted picture in "Logo.png" for website and "Logo_print.png" for printsheet