Duplicating a conversation makes a copy of the conversation, including all message blocks and audio files for all participants in the conversation.
The same participants are added to the duplicate conversation, however they are not automatically invited, so they will not have access to it. This allows you to edit the duplicate conversation as you like, changing the blocks and participants, before inviting again.
You may choose to delete a participant from the conversation, which will remove all their message blocks including the audio. Alternatively, you can exchange one participant for another, which preserves the message blocks but deletes any audio they contain.
In this way, you can use conversations as templates.
To duplicate a conversation, visit the conversation list and press the three dots menu icon on the conversation. In the resulting pop-up, press 'Duplicate this conversation'. After a few moments, the duplicate will appear in the list.