I'm studying for my RPL exam and I have had conflicting information regarding the law for unlicensed passengers to manipulate the control in any way during the flight. Although in the VFRG it says that non part 61 compliant personnel shall not touch the controls of the aircraft. However, I've also heard pilots say that if you're the PIC, you are allowed to authorize passengers to fly the aircraft but responsibility lies with the PIC. Could someone confirm this?