Is it possible to assign Expense Approvers by PeopleSoft security role instead of using the 'Approve

Is it possible to assign the Expense Approver Roles (e.g. Pre-Pay Audit, Post-Pay Audit, etc minus the HR Supervisor) by PeopleSoft security roles instead of using the delivered 'Approver Assignment' page? My implementation would like to be able to assign the appropriate expense approver roles to an employee by their roles (e.g. PS_EX_MANAGER) instead of having to manually assign the roles to appropriate people and keep it up to date for any new employees.

This way it is similar to how it works for the other modules (e.g. Payables, Procurement, General Ledger) where the transactions can be routed to the appropriate approvers via SQL that searches for their assigned roles.