Unfortunately, this is not possible, since any graphic must be
anchored to a paragraph and thus cannot be isolated on a page.

The best you can do is to anchor the pictures that should be on a page
by themselves to an empty paragraph, and then format that paragraph
and the following paragraph to have "Page break before" formatting (on
the Line and Page Breaks tab of the Format > Paragraph dialog box).
The easiest way to manage this is to create a style for the purpose
and apply it to the relevant paragraphs.

to do is have a page that will insert itself between two full pages,
and if I format the text on either page, it will float around the
inserted page.