Use when something non-trivial is to be built or reworked and its implementation plan has to be written, from an idea or from a board, or when a plan has to be redrawn after an increment landed. Produces, through an interview, the one plan document that holds the design, the decisions, the slices, the tracker execute-plan runs from and the orchestrator's mandate. Not for keeping an open discussion (brainstorm), not for cutting the slices or writing their documents (write-slice) and not for carrying the plan out (execute-plan).