Handrail modelling - Adding parts & exploded view of structural members

Hi,I'm new to weldments and after trying out the tutorial,I have a couple of questions.

I'm trying to model a handrail which is made up of square tubes.Although the separate tubes won't be welded together,I figured the SW weldments feature would be fastest way to go about doing this,rather than extrude individual parts & assembling them.Connector pins or plugs would be used to join the various tubes together.

Would it be possible to create the handrail frame and add the connector plugs as separate parts in an assembly?

Also,could I have an exploded view of all the parts including the main structural members even though they are lumped as one part?

SolidworksWeldments