follow experts so lost in the weeds they'd have you using an industrial weed wacker to clear a 0.09 acre yard.(not enough room for a tennis court)

References from the Golden Age of petrochemical photography.
Camera technique for Professional Photographers, Kodak Publication No. O-18
Large-Format Photography, Eastman Kodak Company Publication O-18e. ISBN 0-87985-771-4

Stroebel, View Camera Technique
https://archive.org/details/viewcameratechni00stro

Kodak 1952, Camera Technique
https://archive.org/details/cameratechniqueforprofessionalphotographers

https://archive.org/details/basicdeveloping00east

https://archive.org/details/kodak-films/page/n19/mode/2up
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* Type of camera
* parts of camera
* film holder / use
* lens board / mounting
* focusing / aids
* exposing
* processing
* printing
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approach. mode. photography changed in need and use, users
pedagogical mannerisms. 
ask those who told you about focus rules, why those rules fail with movements.
what you are asking, simply, is: how to focus a view camera. Answer is based upon the scene and the seeing.
everywhere or selective somewhere