The link you shared is that admin list of all jobs that you have on your site. I believe what you see is the column with the star icon in the heading. There is no option form that screen to feature a listing. It will just show a check mark in that column if a specific listing is featured.
If you have a specific listing that you would like to “feature,” click on the pencil icon on the far right (under the “Actions” heading) to edit the specific listing. It will bring up a pretty standard post edit screen on which there is a meta box titled “Job Data” just below the standard content field. There’s a “Featured Listing” check box in that meta box. Click Update in the upper right hand corner once you’re finished and you should be set.
