There are several ways to add a new favorite. The easiest way is to use the search field or the History list to locate the person or endpoint whose address you want to store.
Once you have located the person or endpoint, select the list entry using the mouse or arrow keys, then:
Click the Add to favorites link.
Enter or modify the favorite name as needed.
Click Save or press Enter.
You can also add a video address as a favorite contact directly: