So Cathy, are there no core hours when you have to be in work eg. 10-4pm?

How do you keep track of people?  eg. those as you say who have missed the bus, or are at the dentist or those who just haven't turned up yet?

Isn't there a standard time that everyone must turn up by?  For example in my company, we have to be here by 9.30am and cannot leave before 4pm ie. flexi time.  However we can start as early as 7.30am and work up to 6pm.

How do you know who has done their hours and who hasn't?  Do you submit your hours to payroll?  How are absences monitored?