How should the affected roof area be mapped?
Begin with the reported unit row or interior zone, then relate it to the roof plan and details overhead. A ceiling mark or stored-item concern can help narrow the search but cannot locate the breach by itself. Water may travel along a deck, joint or insulation layer. Inspect the likely path and identify the roof-level condition before opening material. If access to the interior is needed, the owner arranges it; do not assume tenants have been notified or that units can be entered.
At properties with repeated bays, map the observation by building, roof area and nearby feature rather than saying only that the roof leaks. Photograph the detail, note the assembly visible at the edge and record the condition of adjoining material. A repeat concern at multiple locations may warrant a broader survey, while isolated damage may support a localized scope. The evidence and access actually provided determine the right next step.