In the HubSpot Marketplace, search for and location the GoToWebinar integration. When found, click Connect app.
To connect your GoToWebinar click the marketplace icon in the top right corner of your HubSpot portal. And click App Marketplace.
When in marketplace type in the search bar GoToWebinar. And click on the GoToWebinar integration.
Then in the right hand corner click connect app. Then you will be directed to enter your credentials for GoToWebinar. Once you have done this your account will be connected.