First off not sure why they dont have one for Data Architecture so I chose Data lineage instead but my question is why cant I create/edit my own title block instead of the small almost useless one they give you?

First off not sure why they dont have one for Data Architecture so I chose Data lineage instead but my question is why cant I create/edit my own title block instead of the small almost useless one they give you?  I want to add about a half dozen lines of other information to it and cant; which seems really dumb - why not let us edit it completely?