Group Management
Organization Admins go to [Org Admin] > [Users] > [Group] to view and manage all the groups of the current organization, including setting a member as a group administrator, enabling or disabling a group, disbanding a group, setting the department associated with a group (with a "V" logo in the name), setting a group as an official group, and so on.
Personal groups created by organization members are not displayed here, invisible to Organization Admins.
More details about start group chatting