What must be set to default the grade in a single valid grade situation?

In a single valid grade situation, the system must be configured to default the grade appropriately, and doing so requires that the setting to default the grade from the job or position is enabled. When the option to default the grade from job/position is set to "Yes," it allows the system to automatically associate the correct grade based on the job or position assigned to the employee.

This configuration simplifies the process of ensuring that employees are assigned the correct compensation level linked to their specific roles within the organization. By setting this parameter to "Yes," you eliminate the need for manual grade assignments and promote consistency across the organization, which is crucial for maintaining equitable pay practices.

The other options relate to whether the option to enforce valid grades is set, but in the context of defaulting a grade in a single valid grade situation, the primary setting that must be activated is indeed the default from job/position setting. Therefore, enabling this setting is essential for the objective of automatic grade assignment based on predefined roles.