There was a special option for multiple Event Servers on Windows. It never worked well and was dropped. In 7.5.x and up, you can chose to use the multi-process Event Server on Windows (or any other platform), where each .msl can use it's own process, under one Event Server.
Best way to run multiple Event Servers on Intel is to run Linux.
BocaBurger
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The pen is mightier than the sword, but the sword hurts more!