3PSO's who will be responsible for the deployment of Sophos Central are advised to set up an account on their company's domain which can be aliased to the schools they support i.e. schoolA@companyname. This address will be used to create the administrative email address to log in to the cloud portal.
Please note that it is not currently possible to manage multiple sites from a single account, although LGfL are working with Sophos to have this implemented. As a result, individual email addresses will be required per school: