Thank your reply.
https://forum.dfinity.org/t/how-do-i-create-my-own-nns-page/21633/2?u=e274426380
My question has been addressed in another posting.
With the ic-js library I can manipulate neurons in the principalID that is authorised by hotkey.
This practice has helped me to understand the nature of hotkey and how to apply it on the code layer.
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