I need to insert pages only with figures between the text but keeping the text flow. The Page or figures must be anchored with a paragraph from back page, i.e., the reader read about a figure and than sees it in the next page. For instance… page 1 mentions some sculptures, page 2 show the sculptures figures and in page 3 the text form page 1 continues without any line break between 1 and 3. There is some trick for that?
You can set the position of the frame containing the picture relative to the paragraph to which the picture is anchored, but anchoring paragraph and frame must be on the same page. So what you want is not possible with Writer, sorry, you’ll need to move the text and the picture by hand.
That or use LaTeX, of course. With LaTeX everything is possible. Not always easy, but possible.