How to Hide Zoho Flow Admin Menus

function plt_hide_zoho_flow_menus() {
	//Hide the "Zoho Flow" menu.
	remove_menu_page('zoho_flow');
	//Hide the "Zoho Flow → Integrations" menu.
	remove_submenu_page('zoho_flow', 'zoho_flow');
	//Hide the "Zoho Flow → Settings" menu.
	remove_submenu_page('zoho_flow', 'zoho_flow_system_info');
}

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

Where do I put this code?