Sidebar Customization

In order to customize the Q&A plugin, do I copy the php files in the default-templates folder into the theme root or do I move the complete default-templates folder over to the theme?

/themes/buddyboss/default-templates/php files

OR

/themes/buddyboss/php files

I'm trying to get the sidebars widgetized so that I can add information to the right sidebar area ... otherwise, maybe there is a way to do this and it isn't showing up in admin panel

http://www.thechembook.com/questions/using-solubility-rules-predict-what-will-happen-when-potassium-nitrate-is-mixed-with-barium-chloride/