To do this code go to any planet and then for it to take effect enter the Ebon Hawk.When you exit the Ebon Hawk choose The party members that has Stealth skill.put on Stealth then return to the Ebon Hawk.Then visit where the you find the member.You'll see that the party member isn't there.To de-activate take the member out of the Ebon Hawk and then turn off Stealth then go in.The member is back in its place.