With the onOffice Marketplace you can use the products of numerous real estate service providers. You can order your desired service via the Marketplace without having to register with the external provider. For this you need a billing account with the payment service provider (MangoPay). You can set this up easily via the Marketplace interface.
Instructions as videos can be found here.
The settlements with the individual providers are processed via the payment service provider and not via onOffice. The possible payment methods in the Marketplace are credit card and SEPA direct debit.
The Marketplace is actually available in Germany, Austria and Switzerland. The onOffice Marketplace will be extended to other countries in the future.