I have a simple list report which shows all jobs for a customer. Jobs may have no, 1 or more than 1 sales orders against it. I only want customers to see the sales orders which have not been delivered so have added a condition which makes the data NULL if is has been delivered. But I know have blank rows where the sales orders are NULL. I know I can get rid of these usng conditional formatting but have not usd conditional formatting before and cannot work out how to do it - any step by step advice would be appreciated.