@Monstersx Thanks. The way it’s designed (for production) is that it’s one Kitten service per server. That way it can make some assumptions and manage the TLS certificate, etc.
That said, on your own devices, you can run as many as you like/system can handle on different ports. You’d have to manage the services, exposing ports and handling TLS certificates, etc., yourself though.
(The Small Web design keeps things simple to optimise for ease of deployment and maintenance.)