Issue 339 made every trusted setting the controller's terminal's alone, so an agent could only hand the operator a line to type at the control node. Now anyone the bus admits may PROPOSE a layer: settings propose keeps the proposal in the controller's own asks (the asked bucket, which the controller alone writes), judged as settings set judges, and asks the operator on the operator channel at the level approve with every key, its exact new value (in its shape where a path or an address may not leave the mesh), the was of a changed key, the removed keys and the layer's fingerprint. The serving controller sets the layer on the warrant alone: once, for the ask it holds, only when the record's values still digest to what the option bound and the layer is still the one shown, with the terminal's judgement and history, and keeps who approved it beside the layer, which settings says back (migration 0090). Decline, expiry, a cancel, a replacement or the router's refusal discard it; nothing is asked when no router, no grant or no channel can carry it. settings proposals lists them. The push afterwards is a separate act.