Select the (speech bubble) icon at the bottom of the player.
While availability varies by region, The Office is frequently available on Netflix in South Korea. If you are accessing it from within the country, you can typically toggle Korean subtitles directly in the audio/subtitle menu. the office korean subtitles verified
Always ensure the subtitle file name matches your video file version (e.g., "Season 1 Episode 1 - WEB-DL") to avoid synchronization issues where the text appears too early or too late. Select the (speech bubble) icon at the bottom of the player