Transform > Local > Center pivot
 
 
 

Automatically positions the pivot point at the center of the picked object.

Change an object’s pivot point

Scale a canvas plane

Move, scale, or rotate an image layer

Rotation

The Rotation Pivot is displayed as a circle with a dot at the center.

Scaling

The Rotation Pivot is displayed as a circle with a dot at the center, while the Scaling pivot appears as an asterisk.