Boss Pro: Adding a Logo
The Boss Pro theme allows you to display two logo images - when viewing on a desktop, one will be displayed on top of the first background image on the home page. The second will show upon scrolling, and at the top of each interior page.
To add your own image(s), go to Dashboard > Appearance > Header > select your desire image for the header > Skip Cropping > Save and Publish
Then, select your desired Front Page Light Header Image - this is the header image which will display on the Front Page of your site.