Hi @ckarageorgiou

Please refer to the EMA C++ Quick Start for RTO

EMA Quick Start - Connecting to RTO

As well as the EMA example 113 used in the Quickstart, Example 450 also demonstrates an alternative technique for connecting to RTO.

There is also some basic Config guidance for using RTO with EMA in the following article
Enterprise Message API (EMA) - Configuration Overview | Refinitiv Developers