Configuration

Settings load in four layers, each overriding the one before it:

1. The bundled src/OncallAgent/appsettings.json: factory defaults, including the shared Graph:ClientId described in Sign in.
2. Environment variables (double underscore nesting, for example Graph__ClientId).
3. A per-user, writable copy at %LOCALAPPDATA%\oncall-busybar-agent\appsettings.json, created automatically from the bundled defaults the first time the app runs. Edit this file (not the one under src/OncallAgent) to change settings after that first run; it survives updates, which the bundled file's location does not once the app is installed as an MSIX package.
4. An IT-managed registry policy, for organizations deploying this via Intune or another MDM tool. See Intune / Group Policy. This always wins over the file above.

Key	Default	Description
Graph:ClientId	(shared default)	The Entra app's (public) client ID.
Graph:TenantId	organizations	Which tenants can sign in; matches the app registration's account type.
Graph:PollIntervalSeconds	30	How often to poll presence and the calendar (both are polled together on every cycle).
Mic:Enabled	true	Whether the local microphone fallback runs at all.
Mic:PollIntervalSeconds	5	How often to check local microphone activity.
BusyBar:Address	10.0.4.20	Network address of the BUSY Bar device.