To customize the columns, click the gear button (Customize Columns). You can search for columns and turn them on or off, such as Budget, Investment, Impressions, Clicks, CTR, CPC, Conversions, CPA, ROAS, Conversion Value, All Conversions, Conversion Rate, Impression Share, CPM and Optimization Score, and drag them to reorder. You can save sets of columns as per-account presets with the Save and Load buttons, which is useful when each client wants a different view. For the cards at the top, click the adjustment control on the Period Summary (Customize metrics) and select up to 12 metrics, dragging them to set the order; the eye button hides the whole panel. With Compare mode on, the cards show the change versus the previous period for each metric. All preferences are saved for your next visit.