Customize tab context menu

where to edit the tab context menu,the right click on a tab

Customize > Context Menus

I saw it but couldn't get an option to re arrange(move up and down) the things like open new tab,duplicate tab and so on.

Simply drag them while editing the menu.

In customize>context menus which one should i edit to get the desired change?,and while the customize window is open I can't drag the things like open new tab,duplicate tab etc

Double click on "Folder Tabs" for editing.