How to Enable Outline Mode for a Grid

You can enable outline mode to make grid visualizations easier to analyze.

Create a grid visualization.
Open the Format panel.
Select General Settings from the first drop-down.
Select Enable Outline. The grid appears in outline mode.
Click the or icons to expand and collapse attributes and display more or less detail. You can also expand or collapse an entire level by clicking the attribute header. The expand or collapse state of the attribute header is saved with the dashboard.