All you need to do is download your selected package to your PC, extract it, inside it there is one of this zip files depending of your downloaded package, also a Readme.txt file with this instructions:

Copy or move Free.zip to ChrisPE-Develop and extract it there, all script will decompress in proper location.

Copy or move Propietary.zip to ChrisPE-Develop and extract it there, all script will decompress in proper location.