This site configuration comes with two pre-defined forum areas in the Forums section: General and Site help. To add, delete, or modify existing forums, use the categories configuration section and modify or create new "terms":
When CivicSpace displays the forums, it does so in alphabetical order for terms with the same weight. To change the ordering, edit a term and use the Weight feature. Lower numbers (negative) rise to the top. Higher numbers (positive) fall to the bottom of the display.
For a more detailed explanation of CivicSpace taxonomy, see the taxonomy page in the Drupal handbook.