Hi Danny,
The installer is pretty intuitive.. If you keep your plugins in a specific spot, hit the gear on the Command Center page and change the paths to where you have them.
In regard to AD 2 This is still basically controlled by the XLN installer. You can simply grab the AD serial number go to you XLN installer page, put it in and the XLN installer with start the process of letting you chose and then install your Producer Pack.
I found that Where most of the other items were installed by earlier versions. So there was nothing to do there (Rapture, Dimension Pro, Nomad Factory. etc. With that said if you want to control that it is possible to download to your download location in Command Center and run the installs individually. I saw a post that going into the store and selecting the specific product will download it and then it can be run to install "custom". This probably did not cover everything so please feel free to ask specifics but for the most part is how it was for me. IHTH