You can choose the place for the widget on the webpage and set the time for it to appear after particular scroll up/down or after a particular time period that a visitor spends on your website.
The Notifications widget lets you target the visitors by their browser, device, OS, traffic source, Time/Day, Visitor type and more. You can choose whether you want to target all or just the returning visitors.
You are allowed to customize your widget totally; not just the widgets' looks but you can also choose the time and location they should appear at. Make your widget highly interactive by adding custom images, animations and more to it.