GE JVM3150 Owner's Manual page 22

About the time features.
Express Cook
Express Cook
This is o quick way to set cooking time for 1-6 minutes.
Press one of the Express Cook pads (from 1 to 6) for 1 to 6 minutes of cooking at power level
10. For example, press the 2 pad for 2 minutes of cooking time.
The power level can be changed as time is counting down. Press POWER LEVEL and enter
1-10.
Add 30 Sec
Youcan use this feature two ways:
It will add 30 seconds to the time counting down each time the pad is pressed.
it can be used asa quick way to set30 secondsof cooking time_
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