Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 80%, so the schema already documents almost every field, including the out-of-office replacement rule and empty-string clearing. The description only restates the field list and adds that the job title must come from the organization's Jobs list, which the schema also says. Baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.