Amazon QuickSight announced the launch of sheets within dashboards. Sheets allow better organization of information within the dashboard, where visuals related to specific subject areas or topics can be organized in separate sheets and distinctly identified through the tab name. As a reader, you can then navigate to a single dashboard to get a comprehensive view of all the insights related to a topic. For more information, see here.
from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/06/amazon-quickSight-launches-multi-sheet-dashboards-new-visual-types-and-more/