Make sure that you are using expedition style key bindings in DxDesigner, select the section and press F3 to rotate.
I hope this one will help you.
Currently you cannot rotate groups of objects such as this in DxDesigner/xDX Designer. We are looking to make improvements over the coming releases. This functionality has been requested on Ideas - you may want to promote Idea D13819 and the related Idea D2695
Ok, thank you, I will go promote the idea.
Thanks for the quick response.