[ Help needed ] How to RUN multiple subprojects at once? 2 .exes

[StudentScripter]

Hello in order to develop server/client faster i want to both build and run server.exe and client.exe at once. How can i do that?

Here is my current testproject just 2 simple hello worlds with and project on top to build both:

But in the deployment under run it only allows me to run one at a time? What do i have to do different?