According to the developer's website, the latest version of JProbe is 9.7, so the documentation that exists is for that edition, not the 8.5 one. If you can make do with it, there's an Installation Guide for JProbe 9.7 available on the Internet.
Unfortunately, JProbe has been discontinued and the developers no longer offer support for it, so if you need additional information or you have any questions, I recommend contacting IBM's support instead of Quest's.