How to generate details and projection drawings for each body from file with multiple bodies

Hi,

I am getting a very hard time getting my hand on Microstation.

suppose I have a dgn file with multiple bodies (as attached)

how can I generate projections 2D drawings for each one in a separate sheet? if I use a reference to generate 2D in the sheet model, I get all bodies.

thank you

6406.Example.dgn