Shot in the direction of a player (party of 3) and pointed at the chest on a ledge on Venus. Was then pummeled with rocket fire. I kept pointing. They all came up and got the chest. Then I was invited to their party chat and was completely befuddled by how to do it on XBox One. Started to get audio and then got lost looking for any option to join. Seems like saying launch would have done it, but I had no clue at the time. So.....much for that.