Hi dor peer,
What is the graphic in the precomp that you’re trying to place? B/c – in my mind – the correct approach will depend on what is in that precomp. For ex., in the visual example you gave, if the precomp is one of those dots, then I would do it differently than if the precomp is a triangle made up of three of those dots.
Let me know and I’ll see if I can help. And maybe you can post a pic of the precomp … that may help in figuring out exactly what you’re trying to do.