Most of the time, you don't need to use a wildcard :)
For example, if you're sending visitors to: http://yoursite.com/somepage/, then you would just include http://yoursite.com/somepage in the Pages of your Deadline Funnel campaign. (Campaigns > Edit Campaign > Pages.)
But if you want to display a timer on an entire category of your website, for example, then you could add this as your page URL in Deadline Funnel:
And the wildcard (asterisk) at the end of that page URL tells Deadline Funnel to display the timer on any matching pages:
It is interpreted as, "all URLs that start with http://yoursite.com/page/ should be treated the same in this page".
If you have any questions, please let us know at email@example.com or through live chat on deadlinefunnel.com.