If you wish to hold a Live Shopping event on 2 different stores (for example, you have a Canadian and a US store), you will need to use Larix Broadcaster.
Inside Larix Broadcaster, you will need to set 2 connections, one for the first store, and another for the second store. Make sure to have both of them selected. You may read more about creating a connection here.
Once both connections are selected, you are ready to stream! Launch the video preview on both stores' control room and then launch the Larix stream once the video preview has been finalized.