Hi Nikki,
There is a javascript API documentation available, where you can find each event fired by the plugin, you can hook to them and execute code as you need.
We are currently testing an integration method for GTM, it is not too complicated, but we need to write a lot of documentation for it, as the actual connection for the custom event from the tag manager to google analytics via settings is more complicated as the actual code.
The code is ready, we only need the documentation.