To disable the chat for all your trips:
- Go to Settings > Trips > Chat.
- Uncheck the "Enable chat" option.
- Save your changes.
To disable the chat for a specific trip:
- Go to Trips and select the trip you want to disable the chat for.
- Go to the "Share" step of that trip.
- Inside the 'Trip settings' section, uncheck the 'Enable chat' option.
- Save your changes.