How to limit time approval to direct managers

If you need to limit time approval so that users can only approve time for their direct reports, this can be done in the admin section with advanced permissions.

First navigate to Admin Section > Customize > Time Tracking and enable Show only direct reports by default in review time section:

When enabled, if a user enters the review time section, it will only display time entries submitted by resources that are set with that user as their direct manager. So for example, this resource, Mike Shaide, is set to have John Higgins as his direct manager:

Now with this permission enabled, John Higgins will be able to see Mike's time in the review time screen:

Note that "Show only direct reports" is automatically checked and cannot be unchecked by the user unless they are an administrator. Administrators will still have the ability to approve time by resources that are not their direct reports. 

Note

Note: this feature also follows upwards reporting flows, so if User C reports to User B, and User B reports to User A, then User A will be able to approve User C's time as well