How can I see an overview of all tasks across all elements within a grid?

Task logs at the element and grid level can be accessed via the information (i) action button, or the task log quick action buttons at the top of the grid and on individual elements (on hover if not in build mode).

Task Log Buttons

These logs can be filtered and index-sorted by multiple data columns.
Simply click on any column header’s filter icon to reveal a filter drop down:

GridTaskLog

For example, you can select all open tasks within a project/grid that are owned by selected team colleagues and due to complete in the next four weeks. The search/filter permutations are now endless.

You can view an expanded table view by clicking the full screen icon in the top right of the fly out. The expanded table as additional columns of information, such as stage and theme names, assigned by and when values.

You can print or export a .csv file of the table by clicking the relevant action button. 

If you choose to print, a new page will open that is formatted for print. Once you have left the print dialogue box a modal will appear asking if you want to return to the grid. Alternatively, you can click the browser's back button.