Removing "Add Comments" using Theme Builder 4.0

I'm new to Confluence and working in pre-production environment to see if we can implement into our organization. The first task we have is figuring out a way to remove "add comments" from specific pages. In other words, we would like the parent page of a space not to have comments (Hide "add comments") but the children pages to have comments. Since the default confluence does not seem to be capable of this I found an older post on this forum discussing this problem. Your recommendation was to install theme builder and use the following macros:
As far as I am aware there is no way to do this in a default confluence
installation.

The best I can offer is a Builder 2.0 specific solution which would
allow the comments to be displayed within a panel, based on metadata or
labels eg:

insert into page:

{metadata:showcomments}true{metadata}

insert into the page footnotes panel (or wherever you want the comments
block to appear):

{builder-show:metadata=showcomments:true}{builder-comments}{builder-show}

NB: the metadata check is hierarchical, so if you want the child pages
to not have comments you will need to re-set the metadata in each of the
child pages ... another alternative would be to use labels:

{builder-show:label=showcomments}{builder-comments}{builder-show}

Which would result in those pages with the label 'showcomments' having
the comments area displayed and those without would not.

Alain.