Test execn. outside Test Cycles _HELP

Hi all 

Is it possible to restrict users from executing Test cases outside Test cycle , we want to limit Test execution within Test cycle only .

Please share any knowledge , hopefully there is a solution other than asking users :). 

When Test cases are executed within Test cycle it's allows for better report results >

What are your thoughts Thanks in advance for your kind help - 

Let me pre-empt an answer  cheekily "no there is no such options available but if you add it as a suggestion someone at Smart Bear may pick it up at some point in the future :) "