Start the camera, press the power button until you reach the settings.
From settings, go to Videolapse.
Then exit and start recording. To create for example, a video of 30 seconds, you will have to record in real time, 15 minutes.
You can calculate here: http://www.photopills.com/calculators/timelapse.
To make a 1 minute timelapse, you have to record for 30 minutes in real time. And so on. If you set from “Videolapse” to 3 or 5 seconds, you will have to record even more than 30 minutes.
If you don’t record for enough time, your video might result in being 0 seconds or 3 seconds long. Don’t do that.
Ask me anything in the comments.