What are the logistics of being a back-up dancer for a global artist?

watching a few recorded sets of Dua Lipa this weekend, and while many of the songs in the setlist remain petty similar, I noticed the choreography often changed, I assume to accommodate for different stage structure and such, and now I’m trying to figure out / understand how artists / accompanying persons prepare for tours / random festivals etc?

Do they all travel together? Are there different people for tours vs festivals? Or just in general, how is the logistics of the dancers / choreography handled across so many different venues, events etc?