I included the link to it in that two year old post. The custom alarm integration/panel is called Bwalarm.
However as it happens, two years later, there is a better option. See if you can find the link in this post:
The link was and is to an easy to set up custom integration that provides an alarm system, or “alarm logic”, with delays as requested.
The custom integration linked in this post can do all you requested and more. It’s set up via a GUI, so couldn’t be easier.