RoleGroup 

The same person can have several roles

Element Group Information

Model

Role | Roles
Children: Role, Roles

Used By

Element Roles
Complex Types AgentType, AuthorType, BrandType, CarrierType, ClientType, CompanyType, CustomerType, DistributorType, GuaranteeMethodType, PersonType, StaffType, TravellerType, VehicleMakerType, VendorProviderType, VendorRetailerType, VendorType, VendorWholesaler

Source 

<xs:group name="RoleGroup">
  <xs:annotation>
    <xs:documentation>The same person can have several roles</xs:documentation>
  </xs:annotation>
  <xs:choice>
    <xs:annotation>
      <xs:documentation>One or many</xs:documentation>
    </xs:annotation>
    <xs:element ref="Role"/>
    <xs:element ref="Roles"/>
  </xs:choice>
</xs:group>