Megan --
Autofiltering on the Task Mode column should show you two choices: Auto Scheduled and Manually Scheduled. Are those the two choices you see when you click the AutoFilter pick list in the Task Mode column. If you select Manually Scheduled on the pick list,
Microsoft Project will display all Manually Scheduled tasks, along with their respective summary tasks, even if the summary tasks are not Manually Scheduled. Could that be why you think the AutoFilter is not working?
If that does not work for some strange reason, there is a built-in filter called Manually Scheduled Tasks. To access it, click the View tab to display the View ribbon. In the Data section of the View ribbon, click the Filter pick list and select the More
Filters item near the bottom of the menu. In the More Filters dialog, select the Manually Scheduled Tasks filter. If you click the Highlight button, Microsoft Project will display every task, but will apply yellow cell background formatting on every Manually
Scheduled task. If you click the Apply button instead, Microsoft Project will display only the Manually Scheduled tasks. Hope this helps.