Hi Phil,
In order to specify how long before an auction's end time you would like your snipe to be placed, you just need to enter the desired number of seconds in the "Lead Time" field in the "Add A New Snipe" box.
If you would like to change the lead time of a snipe you have already entered, you will first want to click the grey "Modify" button next to the snipe. Then, just edit the content of the "Lead" field on the ensuing page as desired and click the "Change Snipes" button at the bottom.
If you have any additional questions or concerns, please feel free to contact our customer support team using the web form on the following page:
http://support.auctionsniper.com-Mike
