2 phone lines into one hub

I bought 2 hubs a couple years ago. I installed one up at our cottage, but did not use the scout. Can I use 2 scouts when I hook up my other one and is there a way to get my 2nd phone line to work with just one hub and 2 scouts?
I tried seaching for this, but could not find the answer.

You can hook up max of 4 Scouts to a Hub.
You can put 2 numbers on your account without additional charge if Premier subscriber.
With Premier, you can setup 1 of your Scouts as personal and assign a number to it (will ring separately from Hub).