Put it up means put it away, store it, etc.
Aside from the obligatory y’all, if you want to include everyone in your line of sight or get people’s attention, it’s “all y’all.”
Yes, we have some interesting colloquialisms.
Best example is Warsh:
*Go warsh your hands, warsh your hair and behind your ears.
*The warsh is flooded.
*Warshington DC, Warshington state.