Can someone please explain how to use this feature, theres a lot more here than the previous mv boost.

Do i have to check the boxes for ''use core vf offsets''?

Do i need to put a number in for all of the core points? can i just use the first ''vf point 1 800mhz''?

and im guessing the profile box just sets this for the four different profiles?

I have a 13900hx. i set my undervolts to; 'Pcore -135, Ecore -90, Ecache -50….

what should i try for the vf point/ mvboost? i just keep seeing ''set it to 150''. is that ok to start, and how does this number affect the undervolt in relation to the undervolts that i have? i dont fully understand how this works other than ''applies more voltage and makes it more stable''. if set to 150, does it add a +150 voltage to the cpu when its at 800mhz?