What is the significance of the SOS on the bottom left of the OP board?

The SOS on the bottom left of the OP board signifies the process flow, which is crucial for maintaining efficiency and clarity in operations. By marking the process flow, it helps team members understand the sequence of tasks and how each step relates to the overall workflow. This visual representation aids in identifying bottlenecks or areas for improvement, ensuring that everyone is aligned with the operational goals. Smooth process flow is fundamental in a manufacturing environment, as it directly impacts productivity, quality, and safety. Establishing clear guidelines for progression from one task to the next reduces confusion and enhances collaboration among team members.