Scenario TM-EM , don't want event propagation between Freight Order and Freight Unit

I have a Embedded TM S/4 system and a separate SAP 9.2 EM system. I have configured different FO types and FU types in TM system and setup the integration between TM and EM system.

I have a requirement to neither propagate any events from FO to FU nor from FU to FO.

In my version of SAP TM , I don't have any checkbox on FO Type to choose propagation mode.

How do I handle this situation ?