The list view area will show a list of sales done by contributors in your store. Use the toolbar area icons to select all, select none, delete, and filter your sales listing. You can click on the sales in the list to edit or view them, or you can click on the edit icon under the actions area. Click on the delete icon to delete that sales record. You can click on the pay button to make payment to the contributor for that sale.
IMPORTANT: To make multiple payments at the same time for the same contributor use the users -> members area, click on a member and then click on the sales tab. In there you can make payment on multiple sales records for that one contributor at the same time.