Let me explain more about DTM: DTMAccording to this page :DTM lets you
manage your Adobe Marketing Cloud solutions and other tags across all of
your sites, regardless of your number of domains.Hence it is a tool
which helps you in tagging only. In this scenario it helps implement the
Target Code. Any activity within Test and Target will need be worked
upon in the Target interface only. I'll request you to have a look at
this page for more details. ThanksNikhil