Add to some tiddler tagged $:/tags/ViewTemplate, such as $:/yourname/TiddlerTypeTemplates/Meeting:

<% if [all[current]tag[Meeting]] %>

  {{||MeetingInformationTemplate}}

<% endif %>

(The blank lines around {{||MeetingInformationTemplate}} may or may not be required – it's required if the template contains only a wikitext table, or it won't be recognized as a separate block.)