For paid versions, you'll want to wrap the setup.exe and the defraggler.dat into a new package file.
Expand the .dat into the program files dirctory in the normal "files and folders" part of your package and silent install over it.
If you want to deploy with settings:
on a "reference" installation, get the settings the way you'd like them, then go into "options" and check "save all settings to INI file" include the INI in the package as you wloud the DAT file for the licence.
EXE Package Type
Nulsoft Scipted Installer System (NSIS)
Silent Switch:
dfsetup*.exe /S
Licence Storage Location (for paid versions)
%programfiles%\Defraggler\Defraggler.dat
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