Making a Date Column N/A unless needed to for a specific row

edited 12/09/19 in Smartsheet Basics

I was wondering if there is a way to make a date column go N/A unless needed for a specific row or rows.  


For Example:


I only want the Delivery Date Column to be active when it comes to Deliveries.  Is there a way to do this or no?


Please Help


Thank You.