We are continuing to improve the summarization feature and have been getting this feature request a lot.
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Although there is no way to change the level of detail directly in the summary, you can use Ask Rewind to elaborate / interact with any transcript. Click on the Rewind icon in the menu bar (upper right hand corner of your Mac) > Ask Rewind or use the shortcut ⌘ + ⇧ + /. Try using a prompt like: "What were the action items from Daily Standup meeting today?"

For more prompt tips, see "How to write an effective Ask Rewind prompt".
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