Omegaverse anatomy?

Random old 3am thoughts can someone low-key explain how the omegaverse works like fully. I haven't consumed enough Yuri omegaverse to see how that works so note that.

Like ik for the men and alpha man can impregnate an omega man, my questions now are

1) can either alpha or omega males impregnate an alpha female or/an omega female or is it like only one can and not the other.

2) can female alphas impregnate a female omega and if so, excuse my lack of knowledge, I guess how does that work for the women, if they can get pregnant.

Yh has been in my mind for no reason, not serious just curious.