Share a password without sharing the associate Notes?

When you share an item with someone outside 1Password a copy of the item is made and shared. This means that you could remove the details from the item which you don't want to the recipient to see, share the item, then restore those details.

I've not tested this, so caveat communicator.

Note that this means that if you change something else in the shared item after sharing, e.g. changing the password, then the recipient will only see the old password.

A more conservative but labour-intensive approach would be to have multiple items duplicated from the original and share each of these with one recipient. This way you can keep and share the notes. The drawback is that you'll need to update multiple items if you change a field such as password.