You may choose to select where your widget appears (or not) by inputting keywords that the URL contains or an exact URL match.
There is also an option to configure custom URL targets to trigger the widget popup on desired URL.
Click on the Widgets icon.
Scroll down to the page to the option - “Where should the Widget appear?” and click on the arrow button to see the options below.
You can now update the link on the web page where your Widget would be displayed.