Lock widget
Keep it open in a small window
Safari (Mac): open the widget, then choose File > Add to Dock. Open it from the Dock, pick your business at the top (the Dock app remembers it), then click Turn on Dock badge and allow notifications.
From then on the window fills green, amber or red, and the Dock icon shows a red badge whenever the business is not green. No badge means all good. Keep the window open (minimised or behind other windows is fine): if you quit it, the badge stops updating.
Chrome or Edge: open the widget, then in the browser menu choose Cast, save and share > Install page as app (Chrome) or Apps > Install this site as an app (Edge).
Toolbar button (Chrome / Edge extension)
The extension puts a coloured dot in the browser toolbar. Install it from the extension folder in the Postlock code (see extension/README.md), then paste in this site's address (https://postlock.co) and your widget key.
What the colours mean
Green: locked up to the latest period that should be locked by now. Amber: one period behind, advisers can still post, or Postlock has not been able to check recently. Red: more than one period behind, no lock set, or unlocked.