What does "Unset as home" do to a module?
It means the module will not be the default entry point.

For instance, if you have an app called MyApp with two modules;


If you want the user to be redirected to MyModule1 every time they access your MyApp from the browser then you set MyModule1 as home.

Otherwise, unset MyModule1 as home and set MyModule2 as the default entry.