Took off the front panel of the range and found the circuit board that operated the Oven knob selections and took it off got the part number and order it. Then just replaced it as the reverse of taking it off . The oven knob work to the desire selections on the range .
We had made this determination with the help of a repairman on the phone. I ordered the part and waited for it. It was stuck in West Virginia. After several days after it was expected a repairman fixed my range to the tune of $168. It should have cost $30 (the cost of the part and shipping). Unfortunately I probably won't order from PartSelect again.