Angel,
The left navigation bar in the department template is automatically
generated by the CMS (managed navigation). Whenever you create a new
subfolder, the CMS will automatically insert a content type called a
"2.2 Subfolder Config". Once you edit that Subfolder Config and link
your landing page, it should show up in the left navigation.
In looking at your particular site in the CMS, I think you may be
running into an issue putting spaces and/or special characters (@,
etc) in the names of folders. I'd avoid that if I could, and then
just edit the Subfolder Config and change the 'Directory Name' field
to the label you want to show in the left nav bar (spaces are okay
here, obviously).
Gene
Ag IT