From the watch face, press START, select Anchor, hold MENU, and select the activity settings.

Drift Radius

Sets the allowable drift distance while anchored.

Update Interval

Sets the time interval for updating anchor data.

Anchor Alarm

Allows you to enable or disable an alarm for when the boat moves beyond the drift radius.

Anchor Alarm Duration

Allows you to set the anchor alarm duration. When the anchor alarm is enabled, an alert appears each time the boat moves beyond the drift radius during the specified alarm duration.