Help! Move only within the boundaries

Hi. I’m perfectly new in grasshopper.
Like this capture, Is there a way to make it move only within the boundaries?
Can rotate, move, flip. It’s just don’t go out of star border like red one.
Thank you for any suggestion.
캡처

Hello! I am actually not really sure if I understood your question correctly, buuuut: Do you think this plugin helps you? With it, you can efficiently arrange shapes in other shapes.

I want to place just one, not dozen. Reason why ask it is I want to know how many arrangement scheme there are with one mass shape in site

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