When setting up the integration between SalesScreen and Dynamics CRM you need to input the domain address you use to sign in to your Dynamics CRM organization - also known as the Organization URI.

You can simply sign in to your Dynamics CRM organization and look at the web browser's address bar, as seen in the following image.

Here's a closer look at what you want to copy:

The Organization URI format may vary from organization to organization, but as long as you have a text string that starts with https:// and ends with .com, you're OK!