The Period Summary is the panel of cards above the table. It shows the combined total of the metrics for everything listed in the current period. To choose the metrics, click the settings icon next to the panel. In the Customize Summary window, select up to 12 metrics and drag them to set the order. Options include Investment, Revenue, ROI, Purchases, Cost per Purchase, Leads, Cost per Lead, Clicks, CPC, CTR, Impressions, Messages Received, Instagram Profile Visits, Follower Growth, and more. Your choice is saved and will be the same next time you open the page. To hide the whole panel, click the eye button next to the settings icon.