no, you are correct; you can add your (or a different account's) nsecBunker by doing it from the keys section of your main account

So click on your account on the left > Settings > Keys > ✅ Remote keys

and enter the connection token; if it belongs to a different npub it will create a new account

here I have two different accounts, which means that I can publish stuff using my Pablo key loaded on nos2x but I can schedule stuff on the nostr:npub1w0rld4dmtxdm047wapx896yah42fmafa553w6mrkzyz4esxmvj7q6d58mm account which will be remotely signed by nsecBunker

I know it's thoughtfully confusing; I'll fix it very soon.

cc nostr:npub10awzknjg5r5lajnr53438ndcyjylgqsrnrtq5grs495v42qc6awsj45ys7 

https://cdn.satellite.earth/8f23e671e89efb375e7ea1ba8c2f60df38ee8bebb0ab7ac90fcbb0f0e29bbe53.png