Wuh-wuh-wuh-one.
Just two. One to explain to the public that everything possible is being done to solve the problem, and the other to screw the lightbulb into the water faucet.
None, that's a hardware issue.
Only one as the rest of the world simply MUST revolve around them...
One. Unless it's a blowout then the whole team shows up.
100. 1 to actually clean the shower, and 99 to stand around and talk about how filthy it is.