Thanks for suggestion.
Currently computer shut down could be performed in Pro edition using Python scripts.
Thanks Alexey your response is very much appreciated, being said that there are many of us that either don't want to learn Python or do consider the proposed method as too clumsy, I really think that should be in the GUI so that all users, knowledgeable or not, can enjoy such a feature that, in the end, is going to save them money.
Thanks for listening and for your continued support.
Isaac