Ability to add a password to an entire tag?

It has become tedious adding a password to separate notes. I have a tag called “sensitive”. I don’t expect Bear to have top-flight data security or anything, but I do store things within that tag that I do not want anyone to access. I would be great if I can add a lock to that entire tag, and so all sub-tags within that tag and all notes within that tree will automatically be locked. This seems like a obvious feature but it isn’t there. It