You are right about Google Apps Scripting but currently that does not work with Google Groups.
(https://developers.google.com/apps-script/guide). Hopefully this will put things in the right perspective
Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!
Google is more than just a search engine. Over the years the company has developed a wide range of online services that are readily available to all users. This article highlights how one can use Google services for simple project management.