Books about organizing events and people within them?

It's hard not to get anything that isn't for cleaning one's personal space.

I'd like to learn more about how event planners work and how they get one person or one group to do Their Thing and orchestrate it all into one final goal.

Especially in the context of volunteers or mutual aid. I'd already listened to an audiobook of Dean Spade's Mutual Aid.

But any event organizing is probably also a great place to start.

Thanks in advance.