How does Sony a6300 move the focus?

1. First, find the metering option in the menu and change the focus center of Sony a6300 to metering linkage. .

2. Secondly, the focus area is changed to point focus or extended free point focus, and the area of spot metering is related to the selected focus size.

Finally, to measure the upper right corner, just move the focus directly to the upper right corner.