Vidya,Following your request, I think there is a confusion : The moment
of the tag firing is not the same thing that the position where you want
to inject additional content (your widget). Following the fact that you
need the DOM was ready to inject your content, bottom page load rule
would do the job. As Parit said, of course TMS are not made for that but
it can do the job temporarily, waiting for the right development from IT
team.Mehdi