If you have staffs who will help you manage the community site, you can create a Moderator role and assign your staffs to that role. Your staff then will have enough rights to manage all content shared by users on your social networks.
Go to admincp -> Site settings -> User role manager -> create new role
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Check the “Moderator” check box and then submit to save the change to create a Moderator role
Got to users manage then select a staff/member who you want to assign as moderator to assign him/her to that role
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Click on “Submit” to save change. The member that you just assigned to moderator role will have full permission to manage content shared by your members now.