The schedule sits in the architectural set. Each row is a room. Columns give a code for each surface, such as CPT-1 or PT-2.
A painter uses it to find which walls get which paint. A flooring sub uses it to total carpet, resilient tile and base by room.
Match each code to the finish legend and to the spec section. Then measure the rooms on the floor plan. The schedule gives the finish, not the quantity.
Watch for rooms on the plan that the schedule omits. Watch for remarks columns. They often hold accent walls and other exceptions.