The plugin does not have an option for pagination, and I am not currently planning to add this option.
The thinking behind the plugin was to make it easy to organise pages into sections and sub-sections, thus avoiding large numbers of pages at the same level (and making navigation easier for the visitor).
Generally, I find that where large amounts of similar items are required it is better to create a custom post type and create a specific archive page.
I am currently working on another plugin to provide a front-end for the wp_query command with output that matches the style of the child pages plugin. That will feature pagination (and will work with any type of post – including pages), but I’m afraid it won’t be ready to release in the wild for a while as I am rather busy at present.
