How to access a VSTA Macro

I just installed CorelDraw 18 and I noticed we now have VSTA Macros.  The default one looks like this:

namespace VSTAGlobal
{
	public partial class Main
	{
		private void Startup()
		{
		}
 
		[CgsAddInMacro]
		public void Macro1()
		{
			MessageBox.Show("Macro1 - " + app.Name);
		}
	}
}

I would like to attach Macro1 to a button in the Corel workspace. To do that, I went to Tools> Options > Customization > Commands and chose Macros from the Drop Down menu. 
I thought this would let me choose Macro1 as it comes with CorelDraw 18 but it does not appear. How do I get this Macro to appear?