How do I select city for free job posts on Indeed, Glassdoor and LinkedIn?

When you go to edit your job post, by going to the Job > Job Setup > Job Post > edit job post, at the very bottom you can enter and select the city indexed on the free job boards:

Applies to: [Users that can edit job posts] 
 [free job board, city, Indeed, Glassdoor, LinkedIn, index, post]