When a visitor comes to your page, the notification display delay field determines after how many milliseconds the notification will appear. The default time is 0, which means that the notification will appear immediately. To convert seconds to milliseconds, multiply the number of seconds with 1000. For example:
1 second = 1000 milliseconds;
2,5 seconds = 2500 milliseconds;
5 seconds = 5000 milliseconds.
When having trouble converting seconds to milliseconds, click here.