Are Organization Administrators able to edit user account details, such as email addresses and names?

Yes, within eCloud, Organization Administrators have the ability to edit the account information of other users in their organization.
For details on what information can be edited and the specific steps involved, please consult the user manual section titled "eCloud / What You Can Do in the Members Screen."
*Please note that this functionality is exclusive to Organization Administrators. Regular Members do not have the permission to edit other users' information.