Visual Studio Code Copy with Line Numbers extension copying code

Hi Experts,

I'm using Visual Studio Code.

I saw this cool extension:

Copy With Line Numbers
https://marketplace.visualstudio.com/items?itemName=yassh.copy-with-line-numbers&ssr=false#qna

The extension website menu shows that i will see a menu like this.


But after I installed the extension, When I open up a C# or VB file I don't see that menu circled in red.

When I select all the code and right click the mouse button I just see this menu.
This copy, on this menu just a regular copy, it doesn't copy the line numbers.





How do I launch that menu circled in red in the screenshot above, so I can copy code with line numbers using this extension?
Is their some keyboard shortcut keys I can use to copy?