On the 'locations' tab in the 'Service Areas' section, at the bottom of the page, you'll find an on/off option called 'Nationwide Barks'.
If you have this on you will receive barks where the requester has no location preference for this particular job, meaning they are happy to search nationwide for a professional.
A common example of this is a Web Designer, where the pro can work on a project remotely.
If you want to receive barks nationwide where the buyer has not requested this option, please follow the steps below:
1. On the location tab, click 'Add New Location', then 'Draw on Map'
2. Draw the area around the whole country, click 'next' - select your categories and then 'Save'