In some situations, the approver in a role may not be the best option to approve a specific process they are assigned. When this happens, changes can be made in PATH to create a new approver for this specific process without interfering with the other processes this person approves.
Scroll to the bottom of the page and click the Add Assignment button on the bottom right
The selected Organization level should match the default Approver Org level you are changing. For example, in this scenario, the default routing goes to the Department Business Coordinator (L4), so the Level 4 Org is selected.