Global optimization is a process that reschedules all service appointments within a specified time frame based on predefined criteria such as travel time or priority. It can be used when an extreme weather situation impacts both the volume of work and number of available resources at Universal Containers. Resource Schedule optimization is a process that reschedules service appointments assigned to a specific resource based on predefined criteria such as traveltime or priority. It would not address the impact on other resources or unassigned service appointments. Emergency scheduling is a process that assigns emergency service appointments to available resources based on predefined criteria such as travel time or priority. It would not address the impact on existing service appointments or non-emergency service appointments. Customer first scheduling is a process that assigns service appointments based on customer preferences such as preferred time slots or preferred resources. It would not address the impact on resource availability or service level agreements. Reference: https://help.salesforce.com/s/articleView?id=sf.fs_global_optimization_overview.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.fs_resource_schedule_optimization_overview.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.fs_emergency_scheduling_overview.htm&type=5https://help.salesforce.com/s/articleView?id=sf.fs_customer_first_scheduling_overview.htm&type=5