First, navigate to the campaign where you'd like to connect the Twilio integration, then click "Integrations" from the menu on the left side of the screen.

Next, either search Twilio in the upper right search box, or click the Phone category, then click Twilio.

Then click Connect New Account.

If you haven't already done so, you'll be asked to enter your API key and Secret for your Twilio account. Instructions on where to find these keys are provided on the screen.

You'll then be shown all available Twilio accounts linked to the credentials you've entered. Choose the exact account you'd like to integrate, then click Connect.

Your client's Twilio account will then be connected to the dashboard.
​