Enter VTEX Admin console

Select Checkout menu

Select store and click on configuration wheel.

Enter Checkout Tab

Here you must enter your GTM container id, which should contains our javascript snippet in some label.

<script>
!(function koinFingerprint(d){
    var r = d.createElement("script"),s = d.getElementsByTagName("body")[0];
    r.type = "text/javascript",
    r.src = "https://securegtm.despegar.com/dpp/statics/track-vtex-min.js",
    r.id = "deviceId_fp",
    r.setAttribute("org_id", "ORG_ID"),
    s.appendChild(r);
})(document);
  </script>

You must replace "ORG_ID" with the identifier sent to you by Koin.

You can test with GTM-KVBRTFV