how can you display the sub menu of a specific voice on click?
Sorry I am not quite sure I understand you. You mean a sub-menu of a menu? And on click? Or viewing that page you mean? If it's just a click / dropdown checkout bootstrap menus but I think I am not getting you entirely.
no, in your CMS, when i click on, for example Addons, it load the specific page and after, load the sub menu with this tags:
how can you show the sub menu when you click a specific voice?
Are you building your own module then and would like to display sections within your addon the same way?
What I think Nickdi wants to do is make an admin theme where the streams of each module are dropdowns. When you want to manage the categories of the posts module you first have to go to admin/posts before you can click on categories. He wants to be able to go directly to admin/posts/categories from admin