Here's how to enable/disable chat notifications in an itinerary!
1. Go to the trip
Go to the trip you'd like to disable the chat notifications for, as though you were going to edit it.
2. Go to the Discussion tab
It will be on the right-hand side!
3. Click on the cog
The cog will appear right next to the word Discussion you clicked on a moment ago!
4. Uncheck the Notifications box
Once you click on the cog, this modal will appear. Just uncheck the box to disable notifications!