If your company is located in a city or state with rest time rules, you want to make sure your employees are getting enough down-time between shifts to avoid any penalties.
Sling helps you identify potential "clopening" scenarios. In your company settings, under labor compliance, you can enable and define this option.
It will alert you if the rest time between a shift you are scheduling and another one is not enough.
Note: Sling does not calculate any penalty if a clopening conflict is ignored.