You’ll now see the Epic option in most of the dropdown menus in your custom charts. For example, you can use this to create a high-level overview of all of your epics by creating a Table chart and selecting Epic as a row:

You can then divide the chart into three sections. The name of the epic is displayed in the left column. These are the epics you’ve created in your Trello board via the Epic Cards Power-Up. The middle section shows the progress of an epic as a progress bar. The percentage is the number of tasks or points completed out of all the work assigned to that epic. The rightmost section shows the number of tasks in different states.

In the chart settings, you can select the unit, sorting order, and add metrics like cycle time as another column.

You can aggregate data from multiple underlying boards into this chart under the Data sources dropdown. To get the full overview of the status of your epics, you should aggregate data from all boards that contain cards assigned to your epics.