To edit the layout of a Workbook, you need editor permissions on the Workbook. Select Edit in the top right corner of the Workbook and the sidebar will open two new tab options, Config and Layout.
In the sidebar on the right, select the Layout tab. Each metric is represented in the sidebar by a small box containing its name. You can move the metrics around in the sidebar or the main pane to position them in other parts of the Workbook. Their size can be changed by dragging on the bottom and right sides of the box. When repositioning metrics, you can drag them to the section labeled Archive to store them. This is a separate space where they will be saved but not displayed in the Workbook.