OZ Recommendation: Set the filter to 30% and one minute advance warning. The purpose of this page is to allow you to estimate how accurate is the filter you apply to Overlay Zone. Using past data, we show you the following: Given your filter, how many of the alerts actually end up with an overlay at the time the tournament starts ... if the alert was issued 2 minutes, or 1 minute, before the tournament started (what about late registration?). If your filter is set to % minimum Overlay:
