The BlackBerry Productivity Tab provides quick access to your Hub, Calendar, Tasks and Contacts. Swipe on any screen, in any app, to triage your latest messages, reach out to favorite contacts, and look over your schedule. Tap on any of the four icons within the tab to glance at the most pertinent info for Hub, Calendar, Tasks and Contacts. You can even take action directly in Hub, such as delete or reply all.
From version BlackBerry Productivity Tab 1.1.7.1904:
• Bug fixes and minor enhancements
All versions