Note: Previous versions of this Cookbook indeed provided step-by-step instructions of how to create a Phase I Observing Proposal and Phase II Programme. However, as the OT involved these instructions became quickly outdated. In order not to confuse the user with old examples the instructions were removed. The current version of the Tool therefore only provides some general information about the OT Tool and a guides for using the available OT wizards. it is foreseen that future versions of the Cookbook will include recipes for creating Phase I proposals and Phase II program.