I wanted to explain why I don't usually include the Gamut point but think it's a valuable part of the tapping routine, just a tad complicated. I would use it with a client if we had done a few rounds of tapping and the SUDs score wasn't going down:

The 9 Gamut Procedure is a step in the Emotional Freedom Techniques (EFT) that helps to "fine-tune" the brain by stimulating both hemispheres. While continuously tapping the Gamut Point on the back of the hand, you perform nine actions: closing and opening your eyes, looking down left and right, rolling your eyes in full circles both ways, humming a song, counting 1-5, and humming a song again. This brain-balancing routine engages different parts of the brain through eye movements, creative humming, and logical counting, helping to release emotional blockages.  

How to Perform the 9 Gamut Procedure

Locate the Gamut Point: Find the indentation on the back of your hand, between the knuckles of your ring finger and pinkie finger. 

Begin Tapping: Continuously tap the Gamut point with your fingertips. 

Perform the 9 Actions: While tapping, do the following:Close your eyes. Open your eyes. Look down hard to the right. Look down hard to the left. Smoothly roll your eyes in a full circle clockwise. Roll your eyes in a full circle anti-clockwise. Hum a tune for a few seconds (like "Happy Birthday"). Count aloud from 1 to 5. Hum the tune again for a few seconds. 

WHY IT WORKS

Engages Hemispheres:

The sequence stimulates different areas of the brain by connecting nerves to eye movements. 

Stimulates Brain Parts:

Eye movements are connected to specific parts of the brain, and humming engages the creative right side, while counting engages the logical left side. 

Balances the Brain:

This brain-balancing technique helps to shift you out of a stuck or overwhelmed state, promoting emotional release and a more positive focus.