Follow these steps

1.  Through VTEX settings, choose the option "Gateway Affiliations" and select "ClearSale T".

2.  Insert your ClearSale API Key into the "Entity Code" field. 

*Note* If you'd like to use your Test API Key be sure to toggle the Test/Live button appropriately. 

3.  Set the "Country" field appropriately

4.  Set "Send Authenticated Transactions" to "Yes"

5.  Click "Save" and you're live with ClearSale!

*Note* Remember to enable ClearSale for each of your payment methods!