Ultimate Facebook Auto Share for all Blog Users?

I run a Blog with three other people and we're all sharing Postings on Facebook when they come out (at the moment we do this manually). I did hope, that this could be automated with this plugin, still I did not find any possibility to add the Facebook-UID of the other writers. Furthermore we use the planing feature of wordpress, so we write the Blogposts and tell Wordpress to publish them on the next day at 1:00PM or something like that. Will the plugin work how I / we expect? Where can I add the other users?

Ps: I suppose the Facebook App and API to be setup correctly, because I was able to give permissions to the app on my Facebook account.

Many thanks!