I suppose when you say 'larger' area, that in fact you mean 'deeper' area and I explained it above : the deepness of the zone is mainly tied to the amount of BLUR percentage.. the size (in deepness, thickness etc...) in focus is between the two planes you can see in the camera cone..

Now you must be aware that this zone represents only a space where sharpness is SUPPOSED to be tolerable the real 'total' sharpness would be where the square helper dot is ... a virtual plane in fact
this tolerability being really subjective you may find, with large amount of blur percentage that you can't obtain your object sharp enough to your taste ...

[but if you look only for the wideness(larger angle)it is the FOCAL setting you have to reduce(as for a regular camera, the smaller the number, the wider the angle...)]

(Pardon me if I did not understand the point of your question exactly..)
Paul