I'm not sure what you mean by '
stage ports' and aux sends are a signal rather than a device, but if you have audio equipment such as mics or
monitor/EFX speakers whose locations and information need to be defined then it is common to develop some form of
stage layout showing the device location and type. This is probably most common for concert type performances where you are laying out the locations of multiple mics, floor monitors,
backline equipment,
etc. on
stage or when dealing with
portable systems where
speaker locations and aiming may have to be
identified.
I've seen such layouts done in various
CAD programs but also in Visio, Word and just about anything else.