To Install and Configure Klaviyo, Go to Settings - > Click on Integrations and Click on Get Started.
Next is to add the Public API keys and Private API keys.
To get your API keys, Login to your Klaviyo Account -> Go to settings -> Click on API keys -> Copy the Private and Public API key and Enter the keys on the 99minds platform and Click on Save.
You can also follow this link to see how to do so:
Click on Integrations and you will now see that you have configured the app.
Note: 99minds does not send transactional events to Klaviyo by default. To send transactional events, Click on Enable button.