Click Reporting > Metrics in the top navigation.
To update one metric at a time, hover over the three dots to the right of the metric and click Update. Update the metric's data points on the following screen and press the [Enter] or [Tab] key to save each one.
To update all metrics at once, click Update All Metrics at the top of the page.
Find the metrics you want to update in the list, and begin adding new data points. Data saves automatically once you press [Enter] or [Tab].