Active track

Greetings, I have a DJI Mini 4 Pro. I want to activate Active tracker. The instructions say to go to settings, Control and after the drone is in flight activate subject scanning.
When I go to settings, Control I do not have a Subject scanning switch
MY drone is about 9 months old and all soft and firm wear is up to date any advice?

To activate flight subject scanning on the DJI Mini 4 Pro, first take off and fly your drone. Then, go to the control menu within the DJI Fly app and toggle the “Subject Scanning” option to enable it. Once activated, the drone will automatically detect and display plus signs (+) on trackable subjects in the camera view, allowing you to tap the plus sign to select the subject and initiate tracking,