At the top of the Expenses page, you’ll see an overview of how much you owe, how much you are owed, and your current balance. This balance is a current tally of what you’ll have left after the tab is all settled.
You can add two expense types: an expense accrued from an event on your itinerary, or a custom new expenses. Entering an expense pulled from an itinerary event preloads some information for you already, while adding a custom expense gives you a blank slate (think, a round of drinks or an Uber ride). You can choose to make an expense private by tapping that switch on the details page.
The person that created the expense can mark it as paid once they’ve received a payment outside the app.