wp job manager custom fields edit with custom press

Can I use CustomPress to edit custom post types created by other plugins and add custom fields. Let us say WP Job Manager creates a custom post type called job – I want to add a few additional fields like a button, salary data etc. If I use custom press to create the fields and link it to Job custom post will the front end submission, back end save, admin edit etc.. all work perfectly…

I uderstand to display I may need to add the [custom_field_block] short code in the pages.. but my question is on front end edit, submission modification etc.