Payables Invoice approval workflow based on Position

Hello,

I'm trying to configure an approval workflow for payables invoices but I would like to use the Supervisory Hierarchy but the approvals would be based on the supervisor's position. It would be similar to the job level option, but with Positions instead.

So, basically, this would be the process:

1. User creates the invoice and submits for approval
2. The invoice goes to the approver. Each Position has an approval limit. If the approver doesn't have one of the positions requred for that amount, it keeps going up following the supervisory hierarchy.

Is it something that's achievable? If yes, can I do that with the spreadsheet?