FR screenshot, by default, it is not activated on a specific channel.

To activate it:

1. on the top right, clic on the 3 vertical dots to open the channel menu
2. in the channel menu, you'll see the line "Auto-Translate" (here in French: Traduction automatique)
3. clic on the line "Traduction automatique" and
4. you'll see this screen : it's not activate by default

Note: on this image, it is active.