Shift data is visible on multiple dashboards:
Employees (specific employee) >> Scheduled shifts
Employees (specific employee) >> Timesheets
The most important information to monitor:
Undertime - indicates that an employee's overall work time (with tolerance) is less than scheduled work time.
Overtime - indicates that an employee's overall work time is more than scheduled work time.
Completed - indicates that employee has actually worked at least 7, and maximum 8 hours (assuming that the shift was scheduled as an 8-hour shift, and that the tolerance is set to 60 minutes)
Work time comparison with Scheduled time on the Timeline
Work time vs Scheduled time on the dedicated Employee page
Scheduled time on Real Time Insights