That's probably because you are looking at that graphical half of the BIOS menus on your Gigabyte board. Press Escape and you'll get into the old-school looking BIOS.
If your CPU behaves like mine, there's really not much to tweak to get it to run stable. If you want to use fixed voltage, you just have to set LLC to Turbo and that's all you need to know. After that, to get a multiplier running stable, the only thing you will have to tweak is vcore. There's nothing else you need to touch.
If using offset voltage, I'd suggest to try Low, Medium or High LLC instead of Turbo. That's to keep the voltage while running prime95 or IBT a bit in check. To enable offset voltage, you have to put the vcore voltage setting to "Normal". The following DVID setting will light up.
This is the only important setting you need to know about if your CPU and board behaves like mine (I have 3570k and GA-Z77X-D3H):
Put that on Turbo for fixed voltage, Low/Med/High for offset voltage.