Be able to edit and add more fields to the job approvals process

Currently when a hiring manager requests a vacancy, there are only a few boxes for them to write into. We would like a more robust request process whereby the hiring manager is asked specific questions about the role, such as a business justification, costs, start date, if it's a new role or backfill, the cost of not having the position filled. We are unable to edit the fields so there's very little flexibility and the approvers not getting the information required to be able to decide whether or not to approve the position.

In addition, there's no way for an approver to go back to the hiring manager on the system and ask questions or ask for them to add further information. It's then all done outside of the system.