pack together
To fit multiple people or things into a confined space or container. A noun or pronoun can be used between "pack" and "together." They packed all 20 of us together into a hot, stuffy meeting room to listen to the boss's boring lecture about workplace safety. I don't know how they packed together so many things into one box.
pack someone or something together
to press or squeeze people or things together. The ushers packed the people together as much as they dared. They packed together all the people standing in the room. They packed the cups together too tightly and some broke.