Differences in VBA Behavior Between Excel 2016 for Mac and Office 365 Proplus (windows)

Set NewM=CommandBars("Worksheet Menu Bar").Controls.Add(Type:=msoControlPopup)…

SubAddMenu()
    Dim NewM As Variant, NewC As Variant
    US>'(1) Create a menu called New Menu
    Set NewM=CommandBars("Worksheet Menu Bar").Controls.Add(Type:=msoControlPopup)
    With NewM
        .Caption="New Menu (&C)"
    End With

    US>'(2) Register two commands in the menu you created.
    Set NewC = NewM.Controls.Add
    With NewC
        .Caption="First Line Processing" 'First Command Name
        .OnAction="Action_Row"' Macro to Run
        .FaceId = 541
    End With
    Set NewC = NewM.Controls.Add
    With NewC
        .Caption="First column action" 'Second command name
        .OnAction="Action_Column"' Macro to Run
        .FaceId = 542
    End With
End Sub