Managing supplier registration and change requests in process

We are starting to evaluate the supplier onboarding process and I don't see a way for the requester (internal employee in our case)  to edit an existing registration or change request on the View History page.  We would like to have users update their requests if they are submitted to approvers and the approvers send back for corrections or missing information on both types of transactions.  Am I missing another page that should be available or a security/config setting that would allow this?