auto-numbering Created (Date) grayed out

Shawn Berry
Shawn Berry ✭✭
edited 12/09/19 in Smartsheet Basics

I am trying to have my sheet keep track of new entries created using my form. I found that I could use Auto-Numbering and select Created (Date), by looking through the forums here. However, when I try to change the properties of my form, the Create (Date) option is grayed out. Can someone explain what might be going on?