Can workflow be changed for PR change requests to follow a different approval path?

Our business uses iProcurement for company purchases and we have our purchasing approval path set to follow the employee hierarchy rather than direct.

When our users are raising change requests for requisitions the system forces the approvals to follow the employee hierarchy rather than allowing a different approval path. Even if a different approver is inserted in the approvals option at the time that the change is processed the alternate approver can approve the change however the workflow diverts back to the employee hierarchy before it is approved.

We have a requirement from our business to change this so that a change request can be directed to a different approval path from when it was originally approved. Is there a setting that can be updated to allow this? Essentially we want to be able to transfer the notification ownership to the new approver rather than delegate the response of the notification to another user. Is his possible?