Hi Maya
You will need to look at the permissions assigned to the user you are logging in with. The account will need moderator rights and a particular feed.
Look under the "Users" button under the admin section of the concerto admin page.
from there you will be able to see what groups have been assigned and subsequently which groups have been assigned to which user.
In the "User Groups" section - you will be able to see the groups and the selecting particular group will see which "Feed" that group moderates. - Being able to publish content without approval.
Hopefully the account that you have has the require permission to amend the user/group permissions
Hope this helps.
Kind regards
Andrew