I have an assembly that stretches to the right depending on the desired length. The assembly has a part that moves along when the assembly stretching. When I do a detail drawing on this part, I want it to stay in the same position on my drawing sheet when the assembly changes, so all the notes and dimensions stay inside the sheet boundaries. In other words, the part moves on the assembly, but it needs to stay on the drawing. Note, I really need to show the hole assembly on the part detail drawing.