Treyton had ordered Jacob to call the people they had left in the building, so when they arrived, Treyton immediately arranged for them to do something.
Treyton asked Wes and the others to guide Theo to get all the equipment that they could get.
But of course, Treyton arranged for them to go to the empty rooms first to get the equipment in those rooms.
As for the rooms that were used for research, Treyton ordered the others to put the equipment they needed out in the hallway or clean it up first.
They don't need their horrendous research at all, and it isn't good to show such sights to Theo.
He also ordered the others to guide Theo away from the 3 research rooms used for human experiments.
Even though they needed to get the equipment in there, it was still better to just let the others work harder in getting those equipment out than to let a child see those things.