To do a “dirty” quick remove Dashboard menu can save you a lot of time, if you have a custom post type that user should only have access to.
In functions.php add the following to remove menu items for the user group Editor:
/* hide Dashboard menu items for user: editor */
add_action( 'admin_init', 'my_remove_menu_pages' );
function my_remove_menu_pages() {
global $user_ID;
if ( current_user_can( 'editor' ) ) {
remove_menu_page('edit.php'); // Posts
remove_menu_page('upload.php'); // Media
remove_menu_page('link-manager.php'); // Links
remove_menu_page('edit-comments.php'); // Comments
remove_menu_page('edit.php?post_type=page'); // Pages
remove_menu_page('plugins.php'); // Plugins
remove_menu_page('themes.php'); // Appearance
remove_menu_page('users.php'); // Users
remove_menu_page('tools.php'); // Tools
remove_menu_page('options-general.php'); // Settings
}
}Reference
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