how to adjusting pairing connecting UHF wireless handheld microphone change MIC frequency point

how to auto pairing /connecting UHF wireless handheld microphone change UHF MIC frequency point 1.Open the metal body of the microphone and show up the frequency adjustment point button. 2.Long hold the frequency adjustment point button and on/off button for 3 seconds, the screen will flashing. 3.turn off the UHF receiver and turn on again,short press the frequency adjustment point button,and it will auto connecting/paired transmitter and receiver part. 4.if you are the version of 2 pieces UHF wireless microphone and 1 receiver,please operate above steps 2 times