We would email people. Or set up a Teams channel. Or both. Because that means people might see the message on at least in one way. People would reply in teams or email - because who needs just one method.
We might get a doodle poll for the date. Or a poll for the meeting to discuss it.'
Some might see that.
A meeting invite would go out. Maybe half of them would respond.
I am sure you get the idea - it might happen eventually but I don't think it would be as well organised as it could be.
Would your company or family be able to organise a piss up in a brewery? And how?