seniority date calculation on based on assignment DFF

Summary:

We have a requirement to split and calculate seniority dates based on a DFF (configured at Assignment). Example

Hire Date DFF Value

1.1.2020 A

1.1.2021 B

1.1.2023 B

1.1.2024 A

The expectation is split should be by value in DFF. What do you suggest to use as attribute and level in seniority date set up and can we use adjustment FF ?

TIA

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