So within Stringify you can implement things like "last person leaves home" and "first person arrives home" without using Life360. You can also tie in Life360 if you'd like, but it requires you to run it through IFTTT. We had nearly released a user friendly way of handling this, but the acquisition and among other things delayed that feature (it's currently on hold).
To do this today you'll need Maker and Variables. Here's a guide on sharing things using maker. And another specifically on sharing location that's saved in a variable.
See this post for more details: