Epson WF-4830 Series User Manual page 326

Administrator Information
8. Click OK.
9. Select Security tab, and then select Authenticated Users on the Group or user names.
"Authenticated Users" is the special group that includes all users who can log in to the domain or computer.
This group is displayed only when the folder is created just below the root folder.
If it is not displayed, you can add it by clicking Edit. For more details, see Related Information.
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Settings to Use the Printer
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Setting a Shared Network Folder