Requisition approval based on job level, different purchase types & signature authority limits

We have a client requirement to which we need assistance, based on Requisition Approval Workflow as follows:

User Story:

As a Procurement Preparer, I want requisition approval to be based on both standardized job level and organizational hierarchy (Org Chart), and to accommodate different approval authority limits for direct and indirect purchases, so that signature authority limits and current approval rules can be referenced and applied consistently within the workflow.

Explanation:

There are two categories of purchases—direct and indirect. The approval authority limit for the same user is different between these categories at any given time.

For example:

• User 1 has a direct purchase limit of $5,000