How does Kyle retrieve the memory box?

Sierra tells Kyle to place one hand on the wall and keep it in contact with one wall at all times. Kyle follows her directions and inches forward until he reaches an opening near the book return conveyor belt. Haley directs him to the shelf and drawer where she hid the box. He grabs it, races up the stairs, slips on the marble floor, and the box slides in Community Meeting Room B just under deadline.