Hi Asutosh. I am using AEM6.5.7. and you are correct those option are available inside Assets>Files directories. But the download and at to collection function in missing inside Assets > Templates folder
But the same setup didn't work for the URL. this.value["#image"].href = "https://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/SAP-Logo.svg/320px-SAP-Logo.svg.png"