Yes, it is possible for your drivers to see all upcoming pre-booked jobs in all zones.
In order for your drivers to see all upcoming jobs within the next 15 minutes, you need to make sure that “Show coming jobs” is checked. “Settings - Dispatch - 2. Assignment - Driver information” https://admin.taxicaller.net/admin/settings/dispatch.php#company_tab_assignment
From the Driver App, press “Queue,” then “Show: Zones” to see all upcoming jobs (just how many jobs within each zone, not the job details) for the next 15 minutes.