The Content Library and Template Library are part of the Content Manager main screen, under the network tree.
Content and Template Libraries
To toggle between libraries, click on the Content or Template tabs below the library.
Organize content and templates in the libraries by creating Categories.
To more easily move items into category folders, you can Split the Library Pane. In the upper right corner of the library, click on the rectangular handle bar and drag it down to split the library area.
This will create two panes, each with its own scrollbar. To remove the split panes, click and drag the handle to the top of the library.