Leaders on balloons?

I have a drawing where we are using a 2d outline of an installation on some of the views. I want to add balloon callouts for the various parts, but I can only add a standalone balloon. I don't see a way to add a leader to the balloon so I can manually enter the item no. I'm using SW2015 and Windows 7 Pro.

Thanks!

Al

SolidworksDrawings And Detailing