What joomla and easyarticle ACL settings are needed for site administrator?

I have all sorts of trouble creating working ACL settings for easyarticles.
When I create a new usergroup, and use the ACL settings inside the easyarticle component to make this group a content manager i.e. editor i.e admin, this does not work.
First I get an error trying to log in as a user in this content menager group: turns out I also have to set the joomla acl settings: to permit logging in at the front of the site.
After doing this, I can login, and I can review a pending article, but I cannot edit this same article. When I try to do this i get this as errormessage;
"You are not allowed to edit the post as it is currently under review by site administrators. "
Edit: As I looked further into it: this seems to be corect behavior, because you need first to approve or reject the article. After apporving the article you can edit it.

I am trying to creat a "site administrators" group. edit: An administrator can edit, delete, approve or reject an article, and can add own articles. But an administrator also needs to get "new post requires moderation" mails. What setings determine that these emails are send to a user in the " site administrators" group?
I cannot find anywhere in your documentation what standard Joomla ACL settings are needed for this.
Can you please help me to understand which ACL settings are needed for this where.

Thank you.

Regards,
Paul