and you are correct, it's necesary to change 'edit_themes' to 'switch_themes' anyplace inside theme php in order to user role work properly to show menu options to other than super admin.
but concern to 'constructor' theme, can anybody explain me how i can enable 'horizontal' menus in header?
i created 'Header Menu' with WP30 Menus option, then put a widget 'Menu Pagination: Header Menu' in Top Menu sidebar area, and even i enabled Header-Header Menu in Customize Constructor option but i allways get
Fatal error: Call to undefined function has_nav_menu() in /home/wexpress/public_html/wp-content/themes/constructor/libs/Constructor/Main.php on line 193
so, can anybody help me?