I've been trying to research this but not coming up with much.

If you were going to purchase or build a computer for the sole purpose of video conferencing, what would you focus on for hardware?

I assume I can get by with a very small ssd. After that, I don't know if I should focus on processor speed, graphics, ram, whatever. Assume Skype for Business or Zoom. Probably Zoom because I need to show more than 4 people on screen at once, which will also affect hardware decisions. I need to be able to get at least 6 people on screen at once and possibly a dozen.

What should I focus on?