Sharing, profiles and settings

Hi

Hope your all well, it's been a while since I have been in touch.

Can i please ask, when my users post new items, how can I set it so they are posting to everyone by default?

Secondly, why when I post something to my facebook page, (from within facebook), does it end up showing a brief to this in Easysocial?

Please let me know if there is any more info you need.

Thanks very much