Utilisation rolls up active assignments × allocation_pct per person; the at-risk column also weighs in project status. The “What if” forecast is a plain aito.._predict on the assignments table — project_type is denormalised onto each assignment row at load time, so the query is a single table away from the answer: which role + allocation does this person take on engagements of that kind. No timesheet integration, no rules: predictions come straight from the historical assignment table.