[WordPress] Menu Pages and "Cheatin' Uh?"

1-add-menu-page.php

<?php

add_menu_page(
	'Acme Place',
	'Acme Place',
	'edit_posts',
	'acme_page',
	'display_all_acme_places',
	'dashicons-location',
	3
);

2-define-a-filter.php

<?php

/* Note that the 'acme_places_group' is part of what's defined
 * when setting up the options using the Settings API.
 */
add_filter(
	'option_page_capability_acme_places_group',
	'acme_places_capability'
);

3-the-custom-function.php

<?php

/**
 * Defines a custom filter so that editors can save options with the 'Acme Places'
 * menu page and subpages
 *
 * @since    1.0.0
 *
 * @param    string    $capability  The default capability.
 * @return   string                 The capability needed to edit the post.
 */
function acme_places_capability( $capability ) {
	return 'edit_posts';
}

4-the-full-code.php

<?php

/**
 * Defines the hooks that are necessary to get the dependencies of this class loaded.
 *
 * @since    1.0.0
 */
public function initialize() {

	add_filter(
		'option_page_capability_acme_places_group',
		array( $this, 'acme_places_capability' )
	);

}

/**
 * Defines a custom filter so that editors can save options with the 'Acme Places'
 * menu page and subpages.
 *
 * @since    1.0.0
 *
 * @param    string    $capability  The default capability.
 * @return   string                 The capability needed to edit the post.
 */
public function acme_places_capability( $capability ) {
	return 'edit_posts';
}

/**
 * Adds the menu items and the submenus for Acme Places.
 *
 * @since    1.0.0
 */
public function add_menu_items() {

	add_menu_page(
		'Acme Places',
		'Acme Places',
		'edit_posts',
		'acme_places',
		array( $this, 'display_all_acme_places' ),
		'dashicons-location',
		3
	);

	add_submenu_page(
		'acme_places',
		'Acme Places',
		'Add New Place',
		'edit_posts',
		'add_new_place',
		array( $this, 'display_add_place' )
	);

	add_submenu_page(
		'acme_places',
		'View All Places',
		'View All Places',
		'edit_posts',
		'view_all_places',
		array( $this, 'display_all_places' )
	);

}