Jackie, you have to do it in composer not theme builder.
Interactivity>Hotkey actions
choose the last icon on that popup screen that says launch application
name the application in the third party apps, in your case it will be QuickLaunch exactly like I typed it
go to the top of the box and hit the "use next key typed" button
Hit the key you want to use 1 time
hit ok and do not add anything else to that key.
When you save your .svg file, it will save with it. If it gives you an error once you put it in your theme, ignore any interactivity linking errors. It will work just fine once you load the theme on your phone.
