Hello,
We understand that you want to know how to use the grates or griddles properly. We'll be delighted to assist you with your query.
As per checking, the griddle does not need to be seasoned anymore as it has a protective coating around it; however, it wouldn't hurt to season the grill to help the coating it already has.
The griddle may also discolor over time as it becomes seasoned with use.
Thank you!
-Angelica