Hi @rajan19us and thanks for your question!
I am not aware of any method revealing the rotation center in the viewer so far (will ask if there is a shortcut). Please note that the center varies depending on where you click when you rotate the object.
The generation of the background box as well as the definition of the material point should not be hard and is often easier to counter-check it visually instead of typing in fixed values in my opinion. Do you think that there should be a change in terms of the user experience? If so please let me know
Thanks for the feedback and all the best!