The little white box just to the left of the eBay number on each item listed for sniping is for either deleting or moving that item -- for example, putting it in a group bid file. The box is also useful for multiple deletions or moving more than one snipe, which is what that little "cancel | move" option relates to. Just check all the boxes you want to take a cancel or move action on and then go to the "cancel | move" option. Just don't try to cancel some and move others all at the same time.