The Multi-Account dashboard lets you compare two different accounts side-by-side, with different categories of widgets showing information such as this month vs. last month for spend, CPI, CPM, conversion percentage, ROAS, Optimization Goal, and more.
For example, you can compare performance of the iOS version of your app to the Android version.
This can be set up in a moment - Click the Pre-built dashboards menu, then click the Audit button.
This will take you to the configuration screen, where you can select two accounts to compare.
Pick the two accounts, click the Done button and the dashboard will be created for you.