Let the Guard do his work.
Let the Guard handle his responsibilities.
Allow the Guard to do his work.
Let the Guard take care of his duties.
Permit the Guard to perform his role.
Let the Guard manage his tasks.
Allow the Guard to fulfill his duties.
Let the Guard execute his responsibilities.
Permit the Guard to handle his work.
Let the Guard carry out his job.
Allow the Guard to manage his tasks.
Let the Guard perform his responsibilities.
Permit the Guard to fulfill his role.