Hello,
To add pages in Smooth Slider please go to edit page and from smooth slider post metabox check the chckbox “Add this post/page to” and then update the page.
To diaply pages published with a private status in smooth slider you need to do some code changes. Edit the following file:
wp-content/plugins/smooth-slider/slider_versions/smooth_1.php
You need to modify the query at line no. 86 to following:
$posts = $wpdb->get_results("SELECT b.* FROM $table_name a LEFT OUTER JOIN $post_table b ON a.post_id = b.ID WHERE (b.post_status = 'publish' OR b.post_status = 'private' OR (b.post_type='attachment' AND b.post_status = 'inherit')) AND a.slider_id = '$slider_id' ORDER BY ".$orderby." LIMIT $offset, $max_posts", OBJECT);
After saving the file, private pages will start appearing in the slider.
Thanks for your patience.