Can I add the RPG Safety Tools to an existing game?

So I recently stumbled upon the free RPG Safety Tools Game Add-on this last weekend from all the promotion of Roll20 Con, and it's exactly what I could use for my games.  The problem is it forces me create a new game.  I run several games and already have everything set up and ready to go using other modules from the Marketplace, and I would like to include these tools in those games.  How can I easily add the RPG Safety Tools to my pre-existing games?

Easy. On your main splash game page, just below where you write the games description is a little box with the text Game Addons You can click the arrow and select from the drop down list and click save. The Addon will then be loaded to your current game. Any addons can be added to existing games, you do not need to start a new game to use an addon.

Thanks!  I never paid any attention to that section of the splash page, and had a "Oh..." moment when you pointed it out!  Much appreciated!