Azure Active Directory (Azure AD) organizes objects like users and apps into groups called tenants. A typical way to identify a tenant is using a domain name. If multiple users share a domain name, these users are part of the same tenant. Tenants allow you to set policies on users and apps within your organization to meet security and operational policies. You can protect and manage multiple Office 365 tenants from within one ECOS console.
For more details, see Microsoft's article about Tenancy in Azure Active Directory .
1.Navigate to Settings and click Add tenant.
2.Type your Office 365 tenant name or full domain name and click Add tenant.
3.You will be redirected to Microsoft Online consent page with a list of permissions required by ESET Cloud Office Security. Click Accept to complete ESET Cloud Office Security app registration.
Navigate to Settings and select the tenant you want to Remove. A pop-up will show, warning that all data will be removed and users will stop being protected. Enter ESET Business Account credentials to confirm deletion.