A plan starts before the codes exist.
Plan a release asks only for a title, the artist, the type and the release date. No link, UPC, ISRC or registration is needed yet; they join the plan as they arrive. Add a pre-order, an exclusive on some outlets or in some countries, and say where the worldwide release goes out. The plan counts back from each window.
- Pre-order and exclusive windows, and where it goes out
- Tasks placed by rules, each with where the rule comes from
- Moving the release date moves every task with it
