Adobe never released an official "portable" version of InDesign CS6.
If you are looking for information on Adobe InDesign CS6 or modern alternatives, Status of InDesign CS6 indesign cs6 portable new
What is InDesign CS6 Portable?
Most school or office computers lock down installation privileges. Because a portable app doesn’t write to Program Files or the registry, it can often run on locked-down systems. Adobe never released an official "portable" version of