Sub MakeButton()
    ActiveSheet.Shapes.AddShape(msoShapeOval, 228#, 557.25, 126.1, 126.1).Select
    With Selection
        .Characters.Text = "1 ADDER"
        .ShapeRange.Fill.Visible = msoTrue
        .ShapeRange.Fill.ForeColor.SchemeColor = 3
        .ShapeRange.Line.Visible = msoTrue
        .ShapeRange.Line.ForeColor.SchemeColor = 3
        .ShapeRange.Line.BackColor.RGB = RGB(255, 255, 255)
        .Name = "MyButton"
        .OnAction = "whatever"
        .Top = Range("C3").Top
        .Left = Range("C3").Left
     End With
End Sub

Sub whatever()
    Cells(ActiveCell.Row, 1).Value = 1
End Sub