No, that's not really what I want.
I was able to reproduce the first solution (but it is not easy to see if it worked or not), but the second one didn't work.
Ok, I didn't notice that it was a GIF. So, everything is clear.
I just experienced that when I change something in the drawing, and have to open the component, the other ones are modified, too...because I have to open the component.
Meanwhile I have noticed that the manufacturer offers the plan of the guides in several formats, even in.skp! for each of it's guides.
So I could use that file for placing the holes exactly.