Yes. After the test participant shares their screen, you as the moderator will have the URL the participant is viewing on the bottom of your screen.
*Note: This option only appears after the session has begun, the recording has started, and you are actively sharing the participant's screen
At any time, you can change that URL by entering a new URL at the bottom of the Userzoom Go session.
On desktop, the test participant needs to click on a button that opens the URL in a new tab.