camera move on unity

i have imported a scene from Maya but unity is not showing all 4 camera’s effects.

kindly guide how to change camera PIVOT point??

I am not sure what you mean by all 4 cameras effects but if you are reffering to the four different view points then you can switch to this. If you go to the top right of the editor you will see a drop down menu next to the layers dropdown. If you select 4 split I think this is the view style that you are looking for.