Maintain Worktag Usage is the central configuration task that defines, for each worktag type, how that worktag behaves on different transactional business objects, such as requisitions, purchase orders, and supplier invoices. The Official Workday Pro Procure-to-Pay Guide explains that through this task, administrators can add additional worktags, beyond the standard delivered set, making them available for entry on specific transaction types by setting their usage to Optional, Required, or Primary for those transactions. Option A is incorrect because conditional, rule-based requirements that depend on transaction data are configured through Maintain Custom Validations, not Maintain Worktag Usage. Option B is incorrect because Maintain Worktag Usage applies to transactional business objects, such as purchase orders and supplier invoices, not non-transactional objects like suppliers or purchase items. Option C is incorrect for the same reason, non-transactional objects fall outside the scope of this task, and additionally Primary designations are most relevant to transactional documents where routing and reporting are based on the primary worktag value.