Appium GUI Server listens for both Android and iOS tests

I have a mac mini set up to run Appium server using the GUI and have physical Android and iOS devices connected to it, but I noticed I have to choose either Android or iOS mode before I press launch.
This means my server can only listen for tests of one particular OS unless I manually stop the server to change the the mode.
Is there a way to make it so that my Appium server can work with both Android and iOS tests?

Thanks,

IMO, you need as many appium servers as your devices.