Missing "When exporting tracks to an audio file" section in "Preferences" - about multichannel audio

[grand totem]

Hey, I'm trying to export audio to multichannel. I found a helpful tutorial online (which I will link to at the end of this post), suggesting after I've laid my audio files down properly, I should navigate to Preferences - Import / Export - and there I should find "When exporting tracks to an audio file" to then select "Use Advanced Mixing Options"** instead** of "Mix down to Stereo or Mono". However, my instance of Audacity (screenshot of the tutorial with a magenta circle AND screenshot of my Audacity included), does not seem to have that section. I continued looking for a bit but I am unsure as to where to find that setting.

I am using Windows 11, Audacity version 3.4.2 (I know I should update but the tutorial was from 2021 implying it's not an outdated version problem).

Hope to see some help!

• the tutorial -
  https://www.youtube.com/watch?v=8c2aXB3sziU&ab_channel=TroubleChute

[bold brook]

That option is now in the Export Audio dialog: https://manual.audacityteam.org/man/file_export_dialog.html
Enable "Custom mapping".

[grand totem]

thank you!