[MM3-users] Question about lists and domains on Mailman 3

I've got a single server hosting multiple domains. I've got Apache working as the proxy in front of MM3.

Regardless of whether I go to https://lists.domainA.org/mailman3/lists/ or https://lists.domainB.org/mailman3/lists/, Postorius lists ALL of the lists across both domains.

Is there a way of configuring the system so that, if a user goes to "domain A", only the lists for that domain are listed?

Thanks.

Philip