Can Work Rules be set to influence schedule optimisation to take into account the Service Resource Preferences?

Can the Street Level Routing Cache be deleted?

Is the Dependency field, which tracks the dependency value of an appointment with another appointment, a standard field on the Appointment page layout, or must it be added?

If you wanted an optimized scheduled day within a territory after a sudden change (eg. one of the workers is sick and can't work). Which Schedule Optimization would you use?