standinManager is a tool for Maya to change massively properties in StandIn nodes.
Place the standinManager.py and __init__.py files in a folder named standinManager in your Maya scripts directory and create a python shelf button with the following code:
from standinManager import standinManager
try:
md_win.close()
except:
pass
md_win = standinManager.standinManager(parent=standinManager.getMainWindow())
md_win.show()
md_win.raise_()