Audio Stops when a call comes in or a zoom starts

Roon Core Machine

Synology NAS, but I have experienced this with core on multiple devices.

Networking Gear & Setup Details

Unifi - its not a networking question

Connected Audio Devices

Sonos

Number of Tracks in Library

Tons, but not the issue.

Description of Issue

When playing music via Roon. Usually the app on my Mac, always to Sonos speakers or Sonos Amps. If a call comes in on my iPhone, or if I start or join a Zoom meeting, the music stops playing.

Where is this setting controlled?