The Info Card is like a business card that appears at the end of your videos for 5 seconds. This feature is only available in unlimited, business, real estate and non-profit accounts.
To configure your info card, go to the admin tab. Under "Global" you should see an info card section.
After you have selected and saved a new info card, all future finished videos will have your info card appended to the end.
Please note that info cards are only added during the video finishing process and past videos will not be rerendered.