'Second Instance'??

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01-28-2020
01:00 AM
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Hello
I wonder if someone can help
I'm teaching myself Inventor from Mastering 2016 while studying engineering
I'm at p37 of the downloadable copy: instruction is 'place the second instance of the sub-assembly.
1. Insert another instance of the Flange sub-assembly'
No explanation: no instructions as to how to create a 'second instance' of the sub-assembly
Have I missed something or can someone assist?
Many Thanks