If you want to track more than one landing page on Instapage, install a separate tracking code for each.
Login to Darwin's Dashboard and visit "Tracking Code" in the navigation.
Copy the tracking code HTML that you'll find there.
Login to the Instapage dashboard and open your landing page.
Click on "Scripts & GDPR".
Add the tracking code in the "Tracking Scripts" text box with the "Head" option selected and save.
Go back and click on "Publish Experience" to update your landing page.
Once you've saved your changes, you can verify your install on the Darwin dashboard.