System Options: Versions and Approvals

Validated Install: Checks all three of the child checkboxes and does not allow the checkbox to be unchecked.

When committing changes, prompt for and require a reason: Select this checkbox to prompt users to enter the reason they are making a change to an object while performing a task.

Prevent users from approving their own changes: When this checkbox is unchecked, users can approve their own changes. When this checkbox is checked, someone other than the user who made the changes must approve the changes.