If you would like your visitors to link to a different page on your site when clicking on a photo, you can configure the Photo Link option under Advanced Settings in the Pro Widget configuration screen. Set the Photo Link option to "Other" and then enter the page you would like them to link to in the Photo Link URL input box that will appear. Now when a visitor clicks on any photo in your widget they will be taken to the page you specified.
To sign up for a Pro Widget you will need a subscription.