While POE is an event system that allows you to order event handlers in a way that is more logical for network apps (small handlers for event, possibly creating more events that require more handlers) POE itself is not multithreaded - it looks at the unhandled events and decides which handler to execute, executes it, and repeats the decision making when the handler is finished.

POE is about a certain type of structure.

You should look into either threads or forking to run things in parallel. Both have limitations.