public enum Anchor : System.Enum, System.IComparable, System.IConvertible, System.IFormattable, System.ISpanFormattable  

{
  //Note: Must be on QueuedTask.Run(() => { ...

  //Build geometry
  Coordinate2D coord2D = new Coordinate2D(2.0, 10.0);

  //Reference a point symbol in a style
  StyleProjectItem stylePrjItm = Project.Current.GetItems<StyleProjectItem>()
            .FirstOrDefault(item => item.Name == "ArcGIS 2D");
  SymbolStyleItem symStyleItm = stylePrjItm.SearchSymbols(
                        StyleItemType.PointSymbol, "City Hall")[0];
  CIMPointSymbol pointSym = symStyleItm.Symbol as CIMPointSymbol;
  pointSym.SetSize(50);

  var elemInfo = new ElementInfo()
  {
    CustomProperties = new List<CIMStringMap>() {
    new CIMStringMap() { Key = "Key1", Value = "Value1"},
    new CIMStringMap() { Key = "Key2", Value = "Value2"}
  },
    Anchor = Anchor.TopRightCorner,
    Rotation = 45.0
  };

  var graphic = GraphicFactory.Instance.CreateSimpleGraphic(
                                coord2D.ToMapPoint(), pointSym);

  ElementFactory.Instance.CreateGraphicElement(
    layout, graphic, "New Point", true, elemInfo);
}

{
  //Note: Must be on QueuedTask.Run

  //Build geometry
  Coordinate2D ll = new Coordinate2D(1.0, 4.75);
  Coordinate2D ur = new Coordinate2D(3.0, 5.75);
  Envelope env = EnvelopeBuilderEx.CreateEnvelope(ll, ur);

  //Set symbology, create and add element to layout
  CIMStroke outline = SymbolFactory.Instance.ConstructStroke(
    ColorFactory.Instance.BlackRGB, 5.0, SimpleLineStyle.Solid);
  CIMPolygonSymbol polySym = SymbolFactory.Instance.ConstructPolygonSymbol(
    ColorFactory.Instance.GreenRGB, SimpleFillStyle.DiagonalCross, outline);

  var ge = GraphicFactory.Instance.CreateSimpleGraphic(env, polySym);
  var elemInfo = new ElementInfo()
  {
    Anchor = Anchor.CenterPoint,
    Rotation = 45.0,
    CornerRounding = 5.0
  };

  ElementFactory.Instance.CreateGraphicElement(
    layout, env, polySym, "New Rectangle", false, elemInfo);
}

{
  //Create a simple point text element and assign basic symbology and text settings.

  //Note: Must be on QueuedTask.Run
  //Build 2D point geometry
  Coordinate2D coord2D = new Coordinate2D(3.5, 10);

  //Set symbology, create and add element to layout
  CIMTextSymbol sym = SymbolFactory.Instance.ConstructTextSymbol(
                ColorFactory.Instance.RedRGB, 32, "Arial", "Regular");
  string textString = "Point text";

  //use ElementInfo to set placement properties during create
  var elemInfo = new ElementInfo()
  {
    Anchor = Anchor.CenterPoint,
    Rotation = 45
  };
  var ptTxtElm = ElementFactory.Instance.CreateTextGraphicElement(
    layout, TextType.PointText, coord2D.ToMapPoint(), sym, textString,
                       "New Point Text", true, elemInfo);

  //Change additional text properties
  ptTxtElm.SetX(4.5);
  ptTxtElm.SetY(9.5);
}

{
  //Update text element properties for an existing text element.
  //Note: Must be on QueuedTask.Run
  // Reference and load the layout associated with the layout item
  if (layout != null)
  {
    // Reference a text element by name
    TextElement txtElm = layout.FindElement("MyTextElement") as TextElement;
    if (txtElm != null)
    {
      double x = 2.0;
      double y = 3.0;
      // Change placement properties
      txtElm.SetAnchor(Anchor.CenterPoint);
      txtElm.SetX(x);
      txtElm.SetY(y);

      // Change TextProperties
      TextProperties txtProperties = new TextProperties(
                        "Hello world", "Times New Roman", 48, "Regular");
      txtElm.SetTextProperties(txtProperties);
    }
  }