Solidworks 2011 Mating Parts Question

I am looking for making a model of a 3 pieces of steel attached by a pin.

In my assembly I am trying to insert the pin between the three pieces but am unable to do so.

Does anyone know about how I can insert a pin in a hole in an assembly in Solidworks 2011?

If so, could you please share with me for I am unsure how to on this project.

Thanks and have a wonderful day,

Martin Pruden

SolidworksAssemblies