I presume you are paying for it in full and once you have done that you need to create a Presonus account. Once you have got your account setup you go into it and you will see the software. You download the program and it may look an installer but it just a standard exe type file as far as I Know. It wont install unless you click on it and run it etc.. You can do that onto any machine. Then copy that over to a USB stick etc.. Transfer that to the computer you want to install it on. Copy it over and run it from there. It will simply install the program.
Now you can also download the key to unlock the program and transfer that to the other machine and go through the offline activation procedure. Or you can just put the second computer on line for a moment and it can activate direct from there.
The content comes as a whole bunch of soundsets which you can also download direct from your account to an external drive etc. Remember it is 20 Gig all up. Then you can take that drive connect it to the second computer and just drag the soundsets direct onto the start page and they will install.
(one at a time though please!)