Yes, you can! With a catalog you can create as many sections from it as you want. But since you might be making changes in sections that you want to duplicate, you can copy your sections to catalogs, allowing you to duplicate from there.

Under Sections in Client Admin 

     

At the end of each section line there is a duplicate icon

     

A screen appears to confirm what you are doing

      

It will automatically take you to Catalogs where you will see the copy processing

     

When the catalog is ready you will be alerted

     
     

You can then go to the copied catalog and edit/created a new section from it

        
   

All content, external links, meetings, resources, assignments and discussions copy over. Members and work completed in the section do not.