Sony a7CR Help Manual page 144

If you press the key to which you assigned [Track Recog Off on Hold] or [Track Recog Off Toggle] using [
Key/Dial Set.], [ Subject Recog in AF] will temporarily switch to [Off], suspending tracking of the recognized subject.
Use this function when the tracking frame switches to an unintended subject.
Related Topic
Selecting the focus method (Focus Mode)
Selecting the focus area (Focus Area)
Starting tracking with touch operations (Touch Tracking)
Assigning frequently used functions to buttons and dials (Custom Key/Dial Set.)
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