You can use the RPC Broker Programmer Preference Editor (BrokerProgPref.exe) to define certain default property values for the TRPCBroker component. When you add a TRPCBroker component to a Delphi application, the settings you define in the Programmer Preference Editor are used as the default property values.
Click on part of the Broker Programmer Preference Editor screen below for information on that setting.
You may want to make an entry for BrokerProgPref.exe in Delphi's Tools Menu, to make it easily accessible from within Delphi.