Korsakow natively supports importing separate subtitle files (as SRT) or syncing text overlays with video playback within its interface.
#1 Create the words somewhere else
You need to create the subtitles first outside Korsakow and have them as SRT files.
#2 Link SNU & subtitles
To link the subtitles to a SNU, select the SNU and open the context menu (right mouse click), select “Get Info”.

Then click “…” and browse to the .srt file for each video.

#3 Don’t forget to add a widget to your interface
Make sure you have added a subtitle widget to the interface that is used for this SNU.

That’s it.
Thank you for influencing your mind with Korsakow.