To add multiple currencies, follow these steps:
- Go to the Main menu > Settings > Currencies for Android, or More > Settings > Currency for iOS
- Tap the '+' button to add a currency
- Select your currency option from the list
- Enter the exchange rate* (for Android this will be entered automatically if you're on wi-fi)
- To save it, tap on the √ for Android or 'Create' for iOS
*Currency exchange rates are auto-updated at night. You can turn the auto-updater off at the bottom of the Currencies screen in iOS, or under Settings > Notification Centre in Android.