The MarkerAlignment property allows aligning a marker on the left or right of Series Labels. If the MarkerAlignment property is set to Right, then the marker is aligned to the left of Series Labels. The picture below shows the Markers aligned left:
If the MarkerAlignment property is set to Right, then the marker is aligned to the right of Series Labels. The picture below shows the Markers aligned right:
By default, the MarkerAlignment property is set to Left.