shared memory

So I am having issues trying to find out how to change how much system memory is shared with the gpu. I have a MSI B450 Tomahawk (and I just flash the bios trying to figure this out) , 32gb of ram (16 of which is be shared with the gpu), RTX 2080 super, Ryzen 5 3600x.

I have a desktop with more RAM than i can use (8GB). Most of the time i am using only 4 GB -- peak usage is about 8 GB on rare occasions. So, i want to increase RAM commitment to onboard intel HD graphics. I have a i7-4770 CPU, which has HD 4600 built-in HD graphics GPU. According to...