Add More Rate Option for Every Work Order in Work Center / Routing

Dear Experts,

I have a routing with work center '11006-30-05', description 'Manual Packaging'.

As we know rate are set for Setup Labor and Machine Run in Work Center Rate Revisions.

What we try to explore is, how to add more rate option for every Work Order (WO).

Example,

As Is :

Work center '11006-30-05' -> rate = 6,000.00

To Be :

WO 338767, with work center '11006-30-05' -> rate = 6,000.00

WO 338788, with work center '11006-30-05' -> rate = 12,000.00

Why we try to explore that? It is like the illustration below :

If the product is small (WO 338767), in a hours an employee can produce 10 EA. It mean 10*6,000=60,000.