A 6x6 office floor is divided into four quadrants (top-left, top-right, bottom-left, bottom-right), each representing a department. In Q1, Department A (value 3) moves in — top-left quadrant fills. In Q2 (masked), Department B (value 5) arrives in the top-right quadrant, BUT Department B is on probation — its top-right cells fill with 5 while everything else stays as before. However, a hiring freeze (represented by 0) prevents the bottom half from being staffed yet. In Q3, Department C (value 7) fills bottom-right. In Q4, Department D (value 1) fills bottom-left, completing the organization.