Is it possible to somehow set up nostr:npub1hcwcj72tlyk7thtyc8nq763vwrq5p2avnyeyrrlwxrzuvdl7j3usj4h9rq as a watch only wallet? The idea would be to set it up on a device as a point of sale, from which it was only possible to create invoices and receive payments, but not sending out money for employees to use, while having the same account fully operational on a different device for the employer to use the funds.