Hi I had a really hard time getting kali to work. Not sure if this is the right way (Im sure there's better) but it works and I can even install virtual box on my kali usb set up to run windows 10 on my acer chrombook.
I used this bios upgrade:
https://johnlewis.ie/alls-well-that-braswell/
It will enable you to chose a usb drive for booting (you have to have a live usb running kali)
When you choose your usb you should see the usual kali linux live install screen. proceed as usual.
I have not figured out how to keep my changes also (and I might be doing this wrong) since the usb is an image file I dont know how to use the rest of my usb for storage so if you start installing you will run out of space even if you have a large usb drive I think it will go back to the acers HD I only have a 32gb so space added up quick after windows 10 VM.