[dba-Tech] Minimized group question

I often have several files of the same format type open -- several Word or Excel files for example. 

To close them all, I right-click the minimized icon on the Task bar and choose Close Group. However, that closes the application too. Anyone have a trick for closing all the files without closing the application? I know about Close All on the File menu -- wondering if there's some other trick that doesn't involve actually returning to an open file. 

Thanks!
Susan H.