InstaUp2Date docs

Hi, Sorry for the barrage of questions, but I'm just getting into InstaDMG (and lovin' it!). The docs for InstaUp2Date are a little vague. I've gotten the vanilla and development catalogs to work, and now I want to add third party software. Couple of questions: 1) Where to I put the dmg or pkg files? Can I create a new folder in the main InstaDMG folder and put there there? I would rather not add them to the Caches/InstaUp2DateCache folder (I would like to keep them separate from the apple updates. 2) The sample catalog in the repo refers to the "autoUpdateCache folder or one of the InstaDMG numbered folders". Is that documented somewhere? 3) How can I use "InstallerChoices.xml" for the packages I want to manage through InstaUp2Date? Thanks, Allan