Step 1- After adding a call under a particular nomination click on the eye icon on the top right of the call card. Call detail page will be visible with a default tab of content.
Refer following link for adding a call:Click here
Step 2- Click on the “Browse Content” button on the center of the page. Select content popup list will be visible with list of online courses.
Step 3- Select a course and click on the “Select” button. Content will get added to the call successfully.
Note: Content you want to add should be added in an Online Course.
Refere following link for creating online course:Click here