Changing the percentage (display interval) for your screener

For web intercepts, you can control the percentage of your site visitors who see any given screener from 0.001% to 100%. The fastest way to do this is from Screeners >> Overview >> Manage JavaScript 

Then once you've opened up Manage JavaScript, you can change the display interval on the far right next to any screener. Extra bonus tip - toggle to only show Live JavaScript to narrow down the list, or search for any screener by name.

Alternate Place to Edit Display Interval

You can also go to Screeners >> Publish, and scroll down to the small link for "advanced options" and then edit the drop down next to "display interval"