Explanation
To provide access to the Salesforce Field Service Mobile App, the user's profile must have the Field Service Mobile permission enabled. Updating Public Group membership, assigning a Field Service Mobile License to the user, or modifying the user record would not grant access to the mobile app. References:
https://help.salesforce.com/s/articleView?id=sf.fs_mobile_app_permissions.htm&type=5

Explanation
This option allows tracking customer purchases of serialized components as assets and defining parent-child relationships between them. References:
https://help.salesforce.com/s/articleView?id=sf.fs_asset_hierarchy.htm&type=5

Explanation
Capacity-based scheduling is a feature that allows the system to schedule service appointments based on the capacity of the resources. This feature is supported for service crews, which are groups of resources that work together on service appointments.
References: https://help.salesforce.com/s/articleView?id=sf.fsl_capacity_based_scheduling.htm&type=5

Explanation
Work types are used to define the standard duration and skills required for a specific type of work. By creating work types for similar site visits, the creation of work orders can be streamlined and standardized.
References:
https://trailhead.salesforce.com/en/content/learn/modules/field_service_basics/field_service_work_types

Explanation
Products required and skill requirements are two fields that should be included when creating a work order to increase first-time fix rates. Products required are used to specify the products that are needed for the work order, and skill requirements are used to specify the level of expertise that is needed for the work order. By including these fields, the system can ensure that the technician has the right parts and skills to complete the work order.
References: https://help.salesforce.com/s/articleView?id=sf.fsl_work_orders.htm&type=5