You could follow the steps below to enable auto-tracking via the Reolink App.

Applies to: RLC-823A, RLC-823A 16X, RLC-523WA, E1 Outdoor, E1 Outdoor PoE, RLC-830A, Reolink TrackMix, TrackMix LTE, TrackMix LTE Plus, TrackMix WiFi, TrackMix PoE, E1 pro (hardware version IPC_566) and E1 zoom (hardware version IPC_566) 

Log in to your camera and go to Device Settings > Detection Alarm. Turn on Auto Tracking and choose a Tracking Type.

523WA_auto_tracking.pngDetection_Alarm.pngEnable_auto-tracking.pngChoose_a_tracking_type.png

Note: Auto tracking settings are only available on Android app 4.25.3.3 or later version and iOS app 4.25.4 or later version.