Is there a way to add a gusset to a pipe weldment?

I need to put a gusset in a weldment, but I can't for the life of me figure out how to do it.  I'm still relatively new to SolidWorks, and really new to sheet metal work, so I know I'm probably overlooking something simple.  Can someone please point me in the right direction?

SolidworksWeldments