Not within Roon itself.
The 3rd party Entrypoint extension does allow you to achieve what you want, but in requires additional software, possibly hardware to run it on and a degree of technical skill and time to set it up.
The way it works is by making the external audio source - for example AirPlay from a laptop - appear as a radio station inside Roon, so it’s not the most seamless / elegant of solutions, but it’s there if you want to try it.
There are a couple of existing ‘feature requests’ for this kind of functionality to built natively into Roon, you might want to add your voice / vote to those.