Hi Mariana,
Using ChartRegionClick Event with e.Region.IsChartPoint as condition , it is possible to show the context menu only on a column in the chart not on the other area of a chart.
But it is not currently possible to show the menu with Right mouse button clicked.
I will create a feature request to implement the above.
Please try the attached sample which helps you to display the menu with left mouse button pressed.
Thank you for your continued interest in Syncfusion products.
Regards,
Jaya
ContextMenuVB.zip