A: Hi command.a - Yes, our javascript code can be added to Google Tag Manager using a custom html tag. Instructions from Google for this can be found here: https://support.google.com/tagmanager/answer/6107167?hl=en

Our javascript code will show up in the Setup section of the Settings page in our dashboard once you've created your first button and added an app to it.

Let me know if I can be of further assistance! - Pete