Public Access
This screen's own comment argued ADD out: an address typed into a box, a directory lookup, a role picker and a paragraph saying what adding somebody did not do, for an act a colleague at a desktop is already performing. That was a cost argument and it was wrong about who is holding what. The person who needs to let somebody into a vault is often the one away from their desk, and answering them with "go and find a desktop" is the thing this head exists to stop doing. Making a vault was already here on exactly that reasoning. Nothing shared changed — AddMemberCommand, the role and the chips are the same members the desktop binds — so what this is, is markup and the argument it reverses. Four rows under the members list: the box, three role chips rather than a picker because the answer is one of three short words, ADD, and the paragraph. Gated on being able to administer the vault, so a plain member sees nothing rather than a button whose only outcome is a 403. The paragraph is not the optional part. Adding somebody changes what the server will serve and nothing else; the key is still wrapped by a machine that holds one — which on an unlocked phone is this one, in the same press. A screen that offered the first and stayed quiet about the second would imply the server can hand out access, which is the single claim this product is built to refuse. What the phone still does not draw is anything that takes access away. REMOVE and WITHDRAW KEY act on the first press, and an irreversible revocation under a thumb with its explanation in a tooltip no touch screen can show is the wrong trade — which is the line this file already drew and this does not move. Check 12.4 walks it, including the locked-keychain case: the membership is made and the line says the key could not be wrapped, which is a state somebody can act on rather than silence.