Hi,

I'm a newbie with SP2010. I have a problem with menu toolbar in Group Permision 

I has set up STS for user to login to my website. I granted a Group called Super User which has Full Control to a user. Then using this user login to Website. Now when i go to Permission page and choose a group to view. In that group page, i realize that the New action menu does not exist. In order to add new user to the group, i have to go to Site Actions/Site Permissions and use Ribbon menu to add users to group.

However if i login via Windows Authentication (domain account), i can see the New action menu and can add new user directly in this page. 

How can i enable the New action menu when i login with STS user?

Thanks