How does Canon m6 set up time-lapse photography like this?

You must be from this video: /video/av9870567/

Canon M6 can turn the mode dial to the video position and select "Time-lapse photography" to shoot time-lapse video.

The default delay is 60 times, etc. If you want to customize the delay multiple, you can find it in Settings-Video.

You can also record the video and shorten it later to delay playing.