I am trying to populate an Actual Start Date field with the current date when a checkbox is checked (Task Started). I am using the TODAY feature in my formula for my Actual Start Date. But what I am seeing that when I open my sheet it populates all of those dates with TODAY's date so I loose the actual date that the task started. I do not want that date field to update every day, I want it to be the day the Task started. Is there another date that I can use that will capture the actual date but not update every day but stay stagnant?