Follow these steps:
Open the Exchange Accounts page.
Select the desired Exchange Account and click on "+Add New Key" button.
Add an API Key Name, a Private Key, and a Secret Key.
Optionally, set the expiration date for the API keys and click on "Add" button.
Your key is added now, you should see following confirmation.
If you have any further questions, you are welcome to email our support team at [email protected]