My apologies, but I am now a Newbie here.
I am also a Senior, with deficits. Patience. Thanks.

I have this niggling question running through my head
about 'Display Fusion' which I just now downloaded and
is sitting in my Download File, not yet installed.

I am running Windows 7 Ultimate on a Desktop P.C on an Acer (6 yrs old)
I just acquired an ASUS Notebook (64 bit) running Windows 8.1 (72 hrs old)

Both Desktop P.C. and Asus Notebook will be upgraded to
Windows 10 when that arrives come July 29th.

I haven't as yet installed 'Display Fusion' because I am troubleshooting
the Asus, Win 8.1

My thought about 'Display Fusion' is that it would be enormously useful,
from the little I've actually seen of it, thanks to Screenshots, for when
I get the Asus all sorted out, and daisy chain them together via a USB
hub which is supposed to be delivered today.

I want to be able to see, and work with, my Desktop at the same time
being able to see my Notebook.

Simply asking if this 'Display Fusion' application is the correct tool?
Will I be able to do what I hope to do?

Can I install 'Display Fusion' on both P.C.s: Desktop and Laptop?

Otherwise, do I have to buy two (2) licenses to accomplish that?

Or, do I only need one 'Display Fusion' installed on my Acer
desktop?

I do apologize for the wordiness, I can't really explain what I have
in mind without sounding verbose.

I don't want to install 'Display Fusion' if it is the wrong application
and it won't do what I hope it will.

I do hope that someone will have some answers for me.

I do thank you for listening.