Hey so ive done this with 4 different accounts. Not sure if it can be repeated but the way ive have been getting solo lobby is by: 1.Having a friend/ other account start the mission for cribbs to pick up the supplies to become a trader. 2. Onces friend/ other account is in the solo lobby getting the supplies for cribbs, just join them, not sure if it matters i joined threw ps button. I delivered the supplies and from there it was just my two accounts. May work with other missions that out you in a solo lobby for a mission, i dont know just guessing on that.