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  - `-AllowTranscription` on the same policy interacts with it: with transcription Off and the meeting set to during-and-after, licensed users get nothing unless another participant who's allowed to transcribe starts one.
  - With "Only during the meeting", once one licensed user opens Copilot it runs for all licensed users in that meeting.
  - Purview retention can still keep Copilot prompts and responses even with recording and transcription off (Commercial cloud only, not GCC/DoD).
+ - Meeting knowledge files (the AI-generated artefact behind intelligent recap) have their own policy control, `-KnowledgeGenerationMeetingTypes`: `AllMeetings` (including untranscribed ones), `TranscribedMeetings` or `None`. It only takes effect when both `AllowIntelligentRecap` and `AllowMeetingKnowledgeGeneration` are `$True`; if either is `$False` nothing is generated, whatever this says.
  - Not available in end-to-end encrypted meetings or in GCC High. The policy can also be set in custom meeting templates.
  
  ## When to use / skip
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  - In during-and-after mode, Copilot only covers the transcribed portion. Start the transcript 20 minutes in and the first 20 minutes don't exist as far as Copilot is concerned.
  - "Only during the meeting" isn't "nothing retained". Prompts and responses can still be caught by Purview retention.
  - Large-audience events: attendees get no Copilot, whatever their licence.
+ - `KnowledgeGenerationMeetingTypes` looks like the whole switch and isn't. Set it to `AllMeetings` while `AllowMeetingKnowledgeGeneration` is still `$False` and you'll spend an afternoon wondering why no knowledge files appear. Check all three together.
  
  ## Consultant notes