In this post I show a simple example of how to use the new routing to show different forms with different options: Serve anything, anywhere on your domain, with @anvil.server.route() - #9 by stefano.menci
For example you could create a route @anvil.server.route("/tenant/:tenant_id"), so when a user goes to your.domain.com/tenant/abc, you can show the correct form.
The Tenants table should have the tenant_id column.