You can find your publisher’s Event Grids by clicking on Event Grids at the top of any page:
On the Event Grids page, you can choose to view current, open Grids, or older, Archived grids:
Grids are placed in Archived when the grid administrators for your publisher choose to Archive them. For current grids, you’ll generally work in Open. To view older requests from your accounts, you’ll want to click into Archived.
Enter a grid by clicking on its name.