simplest way to do this in my opinion is to make all lighting positions a symbol FIRST, which allows editing later. Make your position, create a symbol from it, then convert it to Position, then anytime later edit it as you like and refresh the drawing if needed (cmd or crtl+/).
This way, I make one onstage LX symbol, convert to position, and later, when I add tick marks to the symbol, all pipes update accordingly.