Creating a Teaching File is as simple as 1,2,3.
Step 1: Log on to your institution portal.
Step 2: Create your cases using the Teaching File (TF) Editor from the create case link on the menu bar.
Step 3: Make the cases view-able to your residents by setting the cases to "Portal" visibility.
Your residents can now view the cases under the sub-specialty icons from your institution portal!
Helpful links:
The Institution Portal - Gateway to Cortex
Creating or editing cases using the Teaching File Editor
Image Annotation using Teaching File (TF) Editor
Portal Visibility or the "Only Me / Portal" Case Configuration