How to modify the list item drop down context menu in SharePoint 2010

Hi All,

I have a requirement to add my name in the list item drop down context menu, already "Assigned ticket" option is available in the context menu and some names are available in the assigned ticket option. but i can't able to add my name in this options. 

Attached screenshot for reference. Thanks in advance for your assistance!

Thanks

Arun Prakash