Review employee records, reporting relationships and position capacity on fresh requests. A person identifier stays stable across job-information changes. The effective date chooses the correct row, while employee class determines whether the person belongs in the metric being requested. A position vacancy is capacity, not an unrecorded employee.
Each exercise starts independently. Some require a supported job change or position record; others ask for a dated measure. Preserve the fields the task doesn't ask you to change. A department and position must remain compatible. When you calculate FTE, sum the effective fractions rather than counting rows. These tasks use the same concepts you have already practiced, including future changes that must leave October history unchanged.