Align and Crop.
The next tab is Align. You don’t need to use that unless you are doing a 360-degree spin such as for a student sculpture that you would want to rotate in a circular mode.
After that is Crop. You can click on the magnifying glass and it will fit your picture to the screen. What you crop will affect all of the photos the same way. Once you crop, be sure to play your object to see if anything had been cut off or out of the frame. (I did this once on a dog and the tail was cut off.) Click on the arrow to see it play.