You need to run a family journal report first to collect the endnotes.In the report window, give the report a chapter title.This is what you would then select to preview the notes for that chapter.
You have the option when the print window opens to reset the notes and table of contents.You may want to do this. UFT is designed to permit you to print several chapters, collect the endnotes for each, and collect a table of contents.This is what you would do if creating a book.Just to print a report and look at the endnote you would probably reset the endnotes and TOC each time.
Another option, without printing the report if you don't need the report is to set all of your options in the family journal report window, the select preview and select Notes. It will go through the process of generating the report in order to collect the notes but will not print the report and then will preview the notes for you.