About Transform Tool 3D Manipulation
Once you enable the 3D option, the 3D Transform tool become available. This tool is a combination of the 3D Translate, 3D Rotate and 3D Scale tools.
To translate an element, grab the direction arrows in the same way that you would with the Transform tool.
To rotate an element, grab the rotation ellipses in the same way that you would with the Rotate tool.
To scale an element, grab the scaling control points in the same way that you would with the Scale tool.
If you click and drag on the scaling cube, it will scale proportionally on all axes.