This solution enables you to uncombine menus which display in the responsive toggle menu.
By default, the Magazine Pro child theme combines the primary, header & secondary menus in the responsive menu.
Other themes may also include this code in a different position in the child themes functions file.
To remove 1 or more menus from the responsive toggle menu, remove the class from this PHP like this example which removes the secondary menu :
In this case i have commented the line of PHP code out however you could also remove it like this :