First of all, what is a retro-planning document? It’s a kind of chronological timeline to be followed as part of an event strategy. Often, a number of stakeholders are involved in the development of an event, with different objectives. Retroplanning is therefore an opportunity to lay out everything that needs to be planned, with essential information. It’s an effective project management tool, provided it’s properly completed. You can create it using automatic software or an editorial calendar, or you can create it yourself using an Excel spreadsheet, for example.