ask for beersmith3 specification

Dears,
Before purchasing Beersmith 3 Pro-Commecial use, I would like to know the PC specifications that can run Windows-based software.

and...

How many PCs can be used per copy?
I saw that it can be run on two PCs with one copy.
I want to use it on 5 PCs, can I just buy 3 copies?

Thanks for your help

See https://beersmithrecipes.com/checkout

Pro-Commercial Use
$49.95 USD/year
Includes:
Pro Cloud Membership
Desktop and Web Version
All Major and Minor Updates
Cloud Space: 1000 Recipes
BeerSmith Web Recipe Editor
Activate Five Computers
BeerSmith 3 Desktop
Commercial Use License
Subscription or 1 Year