Designing Flexible Menu

I am designing a flexible menu for an embedded device. Because of cost considerations, the touch screen is not used in the design. Transitions between options will be done via buttons. The challenge I have come across is that menu options are not determined yet that is why that part should be flexible. what I have done is that

typedef uint16_t com_t;

/* Limited Level */
#define LIMITED_SETTINGS_BASE              (com_t)0x0000

/* Basic Level */
#define MENU_LANGUAGE_BASIC_BASE           (com_t)0x0020
#define SPEED_DEFAULT_BASIC_BASE           (com_t)0x0040
#define CUSTOM_SETTINGS_BASIC_BASE         (com_t)0x0060
#define OTHER_PARAMETERS_BASIC_BASE        (com_t)0x0080

/* Manufacture Level */
#define MENU_LANGUAGE_MANUFACTURE_BASE     (com_t)0x00A0
#define DEFAULT_SETTINGS_MANUFACTURE_BASE  (com_t)0x00C0
#define CUSTOM_SETTINGS_MANUFACTURE_BASE   (com_t)0x00E0
#define MANUFACTURE_SETTINGS_BASE          (com_t)0x00F0
#define OTHER_PARAMETERS_MANUFACTURE_BASE  (com_t)0x0200

const com_t limited_settings[] =
{
    LIMITED_SETTINGS_BASE+0x01, /* Start-up Menu */
    LIMITED_SETTINGS_BASE+0x02, /* Not assigned */
    LIMITED_SETTINGS_BASE+0x03, /* Not assigned */
    LIMITED_SETTINGS_BASE+0x04, /* Not assigned */
    LIMITED_SETTINGS_BASE+0x05  /* Not assigned */
};

/* 2.*/
const com_t menu_language_settings_basic[] =
{
    MENU_LANGUAGE_BASIC_BASE+0x01, /* Not assigned */
    MENU_LANGUAGE_BASIC_BASE+0x02, /* Not assigned */
    MENU_LANGUAGE_BASIC_BASE+0x03, /* Not assigned */
    MENU_LANGUAGE_BASIC_BASE+0x04, /* Not assigned */
    MENU_LANGUAGE_BASIC_BASE+0x05  /* Not assigned */
 };

 /* 3.*/
 const com_t speed_default_settings_basic[] =
 {
    SPEED_DEFAULT_BASIC_BASE+0x01,   /* Not assigned */
    SPEED_DEFAULT_BASIC_BASE+0x02,   /* Not assigned */
    SPEED_DEFAULT_BASIC_BASE+0x03,   /* Not assigned */
    SPEED_DEFAULT_BASIC_BASE+0x04,   /* Not assigned */
    SPEED_DEFAULT_BASIC_BASE+0x05    /* Not assigned */
 };

 /* 4.*/
 const com_t speed_costum_settings_basic[] =
 {
    CUSTOM_SETTINGS_BASIC_BASE+0x01, /* Not assigned */
    CUSTOM_SETTINGS_BASIC_BASE+0x02, /* Not assigned */
    CUSTOM_SETTINGS_BASIC_BASE+0x03, /* Not assigned */
    CUSTOM_SETTINGS_BASIC_BASE+0x04, /* Not assigned */
    CUSTOM_SETTINGS_BASIC_BASE+0x05  /* Not assigned */
 };

 /* 5.*/
 const com_t other_parameters_settings_basic[] =
{
    OTHER_PARAMETERS_BASIC_BASE+0x01, /* Start-up Menu */
    OTHER_PARAMETERS_BASIC_BASE+0x02, /* Not assigned */
    OTHER_PARAMETERS_BASIC_BASE+0x03, /* Not assigned */
    OTHER_PARAMETERS_BASIC_BASE+0x04, /* Not assigned */
    OTHER_PARAMETERS_BASIC_BASE+0x05  /* Not assigned */
 };

 /* 6.*/
const com_t menu_language_settings_manufacture[] =
{
    MENU_LANGUAGE_MANUFACTURE_BASE+0x01, /* Not assigned */
    MENU_LANGUAGE_MANUFACTURE_BASE+0x02, /* Not assigned */
    MENU_LANGUAGE_MANUFACTURE_BASE+0x03, /* Not assigned */
    MENU_LANGUAGE_MANUFACTURE_BASE+0x04, /* Not assigned */
    MENU_LANGUAGE_MANUFACTURE_BASE+0x05  /* Not assigned */
  };

  /* 7.*/
  const com_t speed_default_settings_manufacture[] =
  {
    DEFAULT_SETTINGS_MANUFACTURE_BASE+0x01, /* Start-up Menu */
    DEFAULT_SETTINGS_MANUFACTURE_BASE+0x02, /* Not assigned */
    DEFAULT_SETTINGS_MANUFACTURE_BASE+0x03, /* Not assigned */
    DEFAULT_SETTINGS_MANUFACTURE_BASE+0x04, /* Not assigned */
    DEFAULT_SETTINGS_MANUFACTURE_BASE+0x05  /* Not assigned */
  };

  /* 8.*/
  const com_t speed_costum_settings_manufacture[] =
 {
    CUSTOM_SETTINGS_MANUFACTURE_BASE+0x01, /* Not assigned */
    CUSTOM_SETTINGS_MANUFACTURE_BASE+0x02, /* Not assigned */
    CUSTOM_SETTINGS_MANUFACTURE_BASE+0x03, /* Not assigned */
    CUSTOM_SETTINGS_MANUFACTURE_BASE+0x04, /* Not assigned */
    CUSTOM_SETTINGS_MANUFACTURE_BASE+0x05  /* Not assigned */
  };

  /* 9.*/
  const com_t manufacture_settings[] =
 {
    MANUFACTURE_SETTINGS_BASE+0x01, /* Start-up Menu */
    MANUFACTURE_SETTINGS_BASE+0x02, /* Not assigned */
    MANUFACTURE_SETTINGS_BASE+0x03, /* Not assigned */
    MANUFACTURE_SETTINGS_BASE+0x04, /* Not assigned */
    MANUFACTURE_SETTINGS_BASE+0x05  /* Not assigned */
 };

 /* 10.*/
 const com_t other_parameters_settings_manufacture[] =
 {
    OTHER_PARAMETERS_MANUFACTURE_BASE+0x01,  /* Not assigned */
    OTHER_PARAMETERS_MANUFACTURE_BASE+0x02, /* Not assigned */
    OTHER_PARAMETERS_MANUFACTURE_BASE+0x03, /* Not assigned */
    OTHER_PARAMETERS_MANUFACTURE_BASE+0x04, /* Not assigned */
    OTHER_PARAMETERS_MANUFACTURE_BASE+0x05  /* Not assigned */
 };

So the idea of base parameters is to create domains for menu options. Menu is divided into sub-menus inside. My question is how can I create an algorithm to switch between sub-menus and options by button without creating a spaghetti code? I mean a humongous switch-case can handle this but that will be hard to read and maintain. If there is another way I am glad to know it.