Ionico does not offer Advanced Optimus (no on-the-fly switch). Not even with January BIOS. It's reboot or nothing.
Hence my GPU driver totally lacks that 4th row on the left. Just 3 present.
And yeah, I am planning to play with the internal 2560x1440x165Hz screen. Else the MUX wouldn't have been a problem at all.
What I understand is that in January BIOS, you do not have dGPU option but in other BIOS version, it exists. I can confirm you that I have dGPU option in my laptop. Could you keep us update on this issue. Same as you, if it doesn't exist, I will send it back