To ensure future dated salaries are activated on their start dates and not before:
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                                                            Go to the Installed Packages page: In Salesforce Lightning Experience, go to Setup > Platform Tools > Apps > Packaging > Installed Packages. In Salesforce Classic interface, go to Setup > App Setup > Installed Packages 
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                                                            Select Configure against Sage People Human Capital Management. 
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                                                            On the Configure Details page: - 
                                                                    Check Use Future Dated Salary 
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                                                                    Set a time to run a daily batch to activate salaries on their start dates in Handle Future Dating 
 
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                                                            Select Save.