The Auto Refresh is for the table on the Clean, Ready and Pickups Page.
This feature is particularly useful if you have multiple devices in use at your store and you want to make sure each device has the latest information. If you have one device it is not required.
Activate the Auto Refresh
Go to Settings > Admin > Workflow > General Settings
Scroll down to "Auto Refresh Tables on Clean, Ready, Pickups page
Select how often you want the refresh to occur
Click on the green update button at the bottom right