They found 4 zombies in the lobby. Briar and Basil slowly approached the nearest zombie and killed them. After killing the fourth zombie, everyone looked at Birch for further instructions. Birch looked at them and nodded. He looked around and said, "We need to go to the staff room. According to the information I got, the keys should be there. The staff room should be next to the security room."
The rest nodded, and Birch led the way to a corridor. There were a few zombies in the hallway. They could quickly take care of them. They saw a sign showing the way to different places in the building and they followed the sign showing towards the staff room. The staff room was at the end of the hallway.