adjusting the detection area in yolov5

[yorucatto]

I am using yolov5 model and im trying to change the area of detection only to a certain area (not full screen). My desired coordinate is x1, y1, x2, y2 = 700, 0, 1300, 1075. something like this https://www.youtube.com/watch?v=w6gs10P2e1k

pls help mee