If a contestant presses the big button on top of the BuzzOff and then gives an incorrect answer; click the red No. 1 Off button. That contestant then loses one point.
If the contestant's current score is   zero, it will remain at zero,  a negative score is not possible.

If a contestant presses the big button on top of the BuzzOff and that contestant then says "Pass"; click the red No. 2 Off button.
No score will be recorded and the game can proceed

If a contestant presses the big button on top of the BuzzOff and gives the correct answer; click the green No. 1 On button. That contestant is then credited with one point.

To start a new round. reset and clear the scores by pressing No. 2 Off and On buttons together.

To turn off the BuzzOff digital display, press No. 1 On and No 2 On buttons together.

To then restore the digital display, press the No. 2 On and Off buttons together.