Pages not matching

Sorry if this has already been asked. How do I modify template pages to match?
The main job listing page is set to no sidebars but when I click on the individual job page/post or Job Application page it then shows a sidebar with all my site pages. Don’t want this.

It doesn’t give me an option to edit so I’m baffled. I’ve checked my Posts and Pages but it’s not listed.
I like this:
I don’t like this:

https://wordpress.org/plugins/job-manager/