Per ABM instruction, we can manually add MacBook to ABM via configurator 2 on iphone, and it should be an enrollment screen at "Select your Country or Region" if you bring the iPhone close to the MacBook.
However, I have tried hundreds times and I just could not get to that screen at all... It is a brand new MacBook.
This is a very frustrating situation, and I really do not know what to do...😫