You can easily edit all your orders under the Order section on the Pi App.

Here are the steps to edit an order.

1. Select 'Orders' > navigate to the order you want to edit > select "Change".
2. Edit the order details – units and price and click "Confirm".

Here are the steps to cancel an order.

1. Select 'Orders' > navigate to the order you want to cancel > select "Cancel".
2. Click "Confirm" to cancel.

Note: You will only be able to edit and order if it has not been processed. This applies to market and limit order outside of trading hours.