Can you imbed a component in a component?

Sketchup Go.
I want to create a board with dadoes. I want to be able to treat the dadoes as a component so that I can adjust them if necessary and they all adjust. I also want the shelf to be a component so I can replicate it along with the dadoes. So, it’s kinda like a component within a component.

Assuming you have the dado modeled as a component you can copy or cut it, open the board component, and use Paste or Paste in place to add it. Or better, you could select the board component and the dado component and make a nested component containing both of them. The dado component will not make a channel in the board component in any case.

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