Hello!
From the JIRA issue there is possibility to create new article by this:

There is selection list with "How-To" or "Troubleshooting" templates.
1. Is it possible to add new template (our own) here for choosing?
2. How can be changed template for "How-To" or "Troubleshooting" pages?
We have connection from this Confluence space to this JIRA issue (and reference back).
Unfortunatelly don't find the templates - "How-To" or "Troubleshooting" - on the Confluence "Templates and Blueprints page" (space or global). Where is it?
Hope for help, thanks!
Kind regards, Alexander