How to Hide Manceppo B2B Marketing Hub Admin Menus

function plt_hide_manceppo_inbound_marketing_menus() {
	//Hide "Manceppo".
	remove_menu_page('edit.php?post_type=manceppo_download');
	//Hide "Manceppo → All download forms".
	remove_submenu_page('edit.php?post_type=manceppo_download', 'edit.php?post_type=manceppo_download');
	//Hide "Manceppo → Add new form".
	remove_submenu_page('edit.php?post_type=manceppo_download', 'post-new.php?post_type=manceppo_download');
	//Hide "Manceppo → Connect".
	remove_submenu_page('edit.php?post_type=manceppo_download', 'manceppo_connection_settings');
	//Hide "Manceppo → Sync".
	remove_submenu_page('edit.php?post_type=manceppo_download', 'manceppo_sync_settings');
}

add_action('admin_menu', 'plt_hide_manceppo_inbound_marketing_menus', 11);

Where do I put this code?