The special Transposer Help should be under Help. ( It will  have been in the download of Transposer.)

The basic thing is that you have Poser and Carrara open /connected so that you can make changes in Poser that are directly accessable back into Carrara..  You don't have to do that, but that is one of the many features that Transposer has over the basic Poser importer.

bwtr