Yeah, you *could* try 'hacking' it with a calculated column(dont do it Nehad I got something else for you) , but l got to cut in — that’s static and doesn’t even handle `Today` dynamically. Cute, but useless.

And here is the proper way-->

- Trigger: “When item is created or modified”

- Condition: `AssignedTo` is not empty **and** `AssignedDate` is empty

- Action: Set `AssignedDate` to `utcNow()`

And boom!?. Auto-fills the moment you assign someone. No nonsense.

You're welcome.