Final answer:
The trainee can resolve the issue by selecting Advanced Features in the View menu of Active Directory Users and Computers to enable the Security tab.
Step-by-step explanation:
The trainee Windows domain administrator can resolve the issue by selecting Advanced Features in the View menu of Active Directory Users and Computers. The trainee can resolve the issue by selecting Advanced Features in the View menu of Active Directory Users and Computers to enable the Security tab.
The Security tab is not displayed in the OU properties because it is a hidden feature that needs to be enabled by selecting Advanced Features. Once Advanced Features is enabled, the Security tab will be visible and the trainee can set granular permissions on the Sales OU.