When installing RigManager for Windows, there is tab where you can look on your mounted disk / partitions and see free disk spaces. Curiously, this is an odd feature, because you can not select a special disk and after this selection select a directory (maybe by creating it). RigManager installation always uses Windows own schema for installing programs into "C:\programs". Personally, I dislike this and always use another partion/disk than C:. So, this should be selectable by the installation procedure.
Of course, I found it quite usefull that RigManager obviously does not depend on some Windows Registry entries to run. So my workaround is just: copy (move) the while directory "Kemper Amps" to my preferred disc and directory.