Assembly selection Navisworks

Hello,

I have a revit model of a bridge, I want to upload this model through dynamo to Navisworks.
I put some items into a revit assmebly so that I can select all these items at once, however this assembly doesn’t get put into Navisworks, which makes it impossible to select it all at once in Navisworks. How can I be able to select of the same items at once in Navisworks?

Thanks in advance!