Autocomplete rule to restrict Change Salary Eff date based on Payroll start date

Summary:

The effective date on 'Change Salary' task need to be limited based upon the Payroll start dates.

Content (required):

Need help with creating autocomplete rule for the below rule -

The effective date on 'Change Salary' task need to be limited based upon the Payroll start dates.

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Code Snippet (add any code snippets that support your topic, if applicable):