To obtain the API keys for your Coinbase PRO account, login and open the menu in the upper right. Here you will find the
API menu option
You will have the ability to create a new API key from this page.
Select the TRADE and VIEW rights before you create the key.
Create API Key to generate a key. All you have to do is copy the data over and set it up in the Price Drivers & Accounts page inside HTS.