Thanks for the confirmation that it is currently not possible Bhardwaj. That is what I suspected from my research but, I just wanted some confirmation.
Using the Admin UI on the server, locate the service definition for your process
Home>Services>Applications and Services>Service Management
At the bottom of the Security Tab, add the group you want to have access using the Add Principal button.
Grant them Invoke-Perm and Read-Perm permissions
Be sure to save your changes.
Members of the group should be the only ones to access your start point.
Thanks Mark. This works