The best way to accomplish this is to set up your dev in the same manner as you want your other system. That rules out all kinds of potential problems.
If that is not possible, the hosts are actually set inside the binding files. You will need to export your binding files, update them, and add them back into the MSI (see my latest blog post on this). They are a little hard to work with, but you’d want to change the Host for the required artifacts inside each application.
Now with that said, it’s really not really that easy. Schema for example don’t run inside a host on there own. Nor do Applications for that matter.
The Orchestrations, Receives, and Sends run inside the hosts. So you need to change your host settings on these inside your application. Also note that the hosts run adapters and this needs to be changed at the adapter level.
A typical scenario I set up is all Receives in one host, all Sends in another, and lastly all Orchestrations in there own host.
Hope this helps.