WIP -- Menu and sub-menu

starting a personal addon, i would like to ask some help and answers,

i want to create ea popup menu (this i know!) with sub-menus, in these last ones, i would like to show text only, the only way i find is to call an already made sub-menu with , is there any tutos related or you can maybe give me some direction?

i would like to create a 3 levels menu…


i should have a look on that, thanks !