Run, Run Selected, and grouped actions work through the NEX HUB Add-on. Install it once on this device to let the browser hand off NEX HUB actions to the local launcher.
NEX HUB pages can show Download, Original Site, and direct Run actions. Download and Original Site work without the add-on. Run actions need the add-on because browsers cannot silently install or launch system actions on their own.
Once installed on a managed device, the add-on enables: