It's a great idea to keep the most important KPIs in the form of different charts on your dashboard. To add a new chart, open the Dashboard tab, enter the customization mode, and click Add chart+.
Once you drag and dropped a chart widget on your dashboard, you would have to specify this chart's parameters. You'll be asked to type in the name of a new chart, select a widget, choose a data source and display.
In under two minutes, we created a very plain Order Types doughnut chart and saved it on the dashboard.