Explanation
The Agent permission set gives access to create cases and work orders, view work types and work rules, book and manage appointments, assign mobile resources, and optimize schedules. References:
https://help.salesforce.com/s/articleView?id=sf.fs_permission_sets.htm&type=5

Explanation
Attaching relevant articles to the work order or work order line items allows technicians to access them offline using the Field Service Mobile App. Creating a quick action on the work order to search the Knowledge base would not ensure offline access, as it would require an internet connection to perform the search. Updating the Service Appointment page layout to include the Articles related list or adding the Knowledge Lightning component to the Field Service Mobile App would not be effective, as technicians use the Work Order Line Item Card in the Field Service Mobile App to view their assigned tasks. References:
https://help.salesforce.com/s/articleView?id=sf.fs_mobile_app_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_work_order_line_item_card.htm&type=5

Explanation
Generation Horizon is a setting that defines how far in advance work orders should be generated from maintenance plans[126]. Defining a generation horizon of 14 days would allow Universal Containers to automatically generate Work Orders 14 days before the next suggested maintenance date by creating work orders from maintenance plans within 14 days of their scheduled date[127]. Defining a generation timeframe of 14 days would not automatically generate Work Orders 14 days before the next suggested maintenance date. Generation Timeframe is a setting that defines how often work orders should be generated from maintenance plans[128]. Configuring Auto-generate Work Orders to True would not automatically generate Work Orders 14 days before the next suggested maintenance date. Auto-generate Work Orders is a setting that enables or disables the automatic generation of work orders from maintenance plans[129]. Defining a generation horizon of 20,160 minutes would not automatically generate Work Orders 14 days before the next suggested maintenance date. Generation Horizon is measured in days, not minutes[130]. References:
https://help.salesforce.com/s/articleView?id=sf.fs_maintenance_plans_overview.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_maintenance_plans_generation_horizon.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_maintenance_plans_generation_timeframe.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_maintenance_plans_auto_generate_work_orders.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.fs_maintenance_plans_overview.htm&type=5

Explanation
This licensing will be required for the Field Service Schedule Optimization user, as it allows accessing Salesforce features and functionality such as optimization jobs and settings. References:
https://help.salesforce.com/s/articleView?id=sf.fs_permission_sets.htm&type=5