Confluence - plugins to create custom templates?

Hi, we are deploying a Confluence instance for our team of ~20 members. I am checking software requirments to make a proper setup.

Also, as you are also a provider of plugins, I’d like to know If you have a plugin or a method to do the following: more precise for creating custom templates. Is there a plugin that lets you create custom templates for processes and later classifying the subchapters of all the pages created by this template. Maybe some custom blueprints or similar that can function.

Here we got some general info on templates and blueprints that might help: Page Templates and Blueprints in the Intranet

As of the software requirements, I don’t know if you need the general info: System Requirements | Confluence Data Center and Server 8.0 | Atlassian Documentation

And last but not least, I think the Page Properties Macro should help you a lot: Page Properties Macro | Confluence Data Center and Server 8.0 | Atlassian Documentation