Question about field of view during walk

[lwc-light]

As title, how can I change the parameter of the field of view during walk?

[pendean]

Show your work: share your DWG file here so we can see what you see.

[lwc-light]

Check this out. The following two screenshots are in two different dwg files. Obviously, they have different field of view in 3d walk. I want to change the field of view from the first screenshot to the second one. However, I can't find any parameter which can change the field of view in 3d walk. How to solve this problem?