In case your users never select an option or in case you don't want to use questions:
You can redirect viewers to any step inside the Smart Vid automatically, without asking viewers for any action, or in case they run out of time if you have turned on the Countdown Timer setting
Open your Step Settings to configure the default action on the interactive tab
Turn on Default Action and choose what you'd like to happen
The default action will take place automatically once the video is over, or once the countdown has reached zero
