How can we use Employment level DFFs for filtering Resource Alerts?

Summary:

Looking at options for filtering Employees from recieving a Resource Alert based on a DFF value defined at the employment level. Also need to understand the resource type that we can use for this. SHould we use learnerLearningRecords/assignedToPersonDetails or learnerLearningRecords/assignmentDFF as resource?

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Version (include the version you are using, if applicable): 22D

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