Sub test()
If InputBox("code please", "TITLE", "") <> "yourcode" Then Exit Sub
ThisWorkbook.Unprotect "password"
With Sheets("USERS")
.Visible = True
.Activate
End With
ThisWorkbook.Protect "password"
End Sub
Private Sub Worksheet_Deactivate()
ThisWorkbook.Unprotect "password"
Me.Visible = xlSheetVeryHidden
ThisWorkbook.Protect "password"
End Sub