Different golfers will feel different pressure points, but as @Ronald Burkholder suggests one of the universal basic elements is that they should not create tension in the arms. That pressure point of the trail palm on top of the lead thumb is definitely a good one for maintaining the cheese wedge and putting the wrist hinge on autopilot, and the last three fingers of the lead hand and middle/ring fingers of the trail hand are good for someone who is not prone to flipping and who likes to feel the handle secured in and controlled by the fingers. One pressure point I do not typically recommend is that of the two thumbs actively pressing down on the handle, as this will activate tendons in the forearms that should generally remain relaxed.
Different golfers will feel different pressure points, but as @Ronald Burkholder suggests one of the universal basic elements is that they should not create tension in the arms. That pressure point of the trail palm on top of the lead thumb is definitely a good one for maintaining the cheese wedge and putting the wrist hinge on autopilot, and the last three fingers of the lead hand and middle/ring fingers of the trail hand are good for someone who is not prone to flipping and who likes to feel the handle secured in and controlled by the fingers. One pressure point I do not typically recommend is that of the two thumbs actively pressing down on the handle, as this will activate tendons in the forearms that should generally remain relaxed.