In terms of execution, this idea is very similar to moving a selection of paths in Illustrator. You drag selected paths around the canvas while having the remaining point anchored in place. The result is that the line between the anchored point and a transformed point follows their displacement.
I have non-linear, sloped curves with offset thickness to mimic the electric power lines that I want to move with a transmission tower model simultaneously, while having the end points touching the tower anchored to it. Is there a strategy for me to move these cables around like that? Thanks.