I have never used concrete5 before and am trying to create a webpage for the nonprofit I work for. I downloaded a free theme to practice with and after reading a forum post I thought I would save the theme under another name to prevent losing my changes in case an update is made by the creator later. I went to the full sitemap and changed the option to display system files. I do not anything resembling your_site_root/packages/package_name/themes/theme_name. Mine shows a folder for Dashboard with 14 folders under it and looks like this:

Dashboard (14)
Composer (2)
Sitemap (3)
Files (4)
Members (6)
Reports (4)
Pages & Themes (4)
Workflow (2)
Stacks & Blocks (3)
Extend concrete5 (5)
Dashboard
System & Settings (9)
Welcome to concrete5
Customize Dashboard Home
Foundation (2)
- Configure
- Documenation
Drafts
Trash

The pages and themes folder just shows the add, inspect, etc... not the theme names. I am logged in under Admin but nothing resembles the Packages folder I expected to see according to the forum post I read.

I would appreciate anyone's help.