Identify the missing words in the following sentence.

The 'Directing a Project' process in PRINCE2 starts when the 'Starting up a Project' process is completed. This transition is triggered by the request to initiate a project. At this point, the project has been preliminarily assessed, and a project brief and initiation documentation are ready to be developed during the 'Initiating a Project' process, pending authorization from the Project Board to proceed.References: PRINCE2® 7 Foundation handbook and official documents.