Try the below for Step and Repeat transformation in photoshop elements:
The Step:Start with a shape or some sort of element that you’ll be repeating over and over again. Hold Command + Option + T (Mac) | Control + Alt + T (Win) , and then drag the element somewhere else. You can also Scale and rotate that element if you’d like. Once you click ENTER, the “Step” is complete.
The Repeat: Hold SHIFT + OPT + CMD + T, and the transformation that was just made (the step) will repeat. Continue holding those keys, and it will repeat again every time you press T.