I'm sure alot of people have had the problem finding a companion who has dissapeared from the settlement you sent them too and you are tired of searching around the entire place to find them. Or, if you are like me, your companion has completely vanished from existence somehow and has somehow left the settlement area. I sent Piper to the Drive in settlement, as Sanctuary was full and went by a little later to check on her. She was in fact there so I left. I came back a little while later to get her again and she is gone. I rang the bell to get all the settlers there, searched the entire area, have checked all my other settlements to make sure I did send her there, checked her house and I still can't find her. And I had just accomplished a romance with her so I cannot get that XP bonus without her nearby. All we really need is a notification at a map as to where our companions are and the option to turn on a map marker to find them.