Hi…
Shortcodes are described on the support page for the plugin, here. Presently, we make no distinction between subscribers and members, as members are created by a plugin and not part of the base WP taxonomy. This may change in the future (or I may implement a way of displaying content for certain types of logged-in users).
Essentially, you would tell the plugin not to automatically put an icon on any page, and then use the shortcode just for those pages where you want the icon to appear. However, if those pages already have unique IDs (as I suspect they might, unless there is only a portion of the page which is hidden from non-members), it might be easier to just use the admin panel to place the icon on those pages, instead of having to manually add the shortcode to each page/post.
You may reach me directly at lgrosenthal AT 2rosenthals DOT com or by contacting me through my blog, referenced above. I’m happy to help as time permits.
Cheers, and you have a good weekend, too.
Lewis