If you have multiple separate stores, for multiple regions such as "example.com" and "example.co.uk" - and want the same Sauce feed shown on each, Sauce supports Multi-store galleries via Custom URL. This involves adding an attribute to the Sauce embed for each of your additional stores, but if you're on Shopify, you in luck as the process is simpler.
Let's say your Sauce account is connected to what you consider your main Shopify store (example.com), and now want to use the same Homepage gallery on your UK store (example.co.uk). Follow these steps:
1️⃣ Install the Sauce App as per normal
Each Sauce account can only be connected to a single Shopify store. But for your 'second store' here (example.co.uk), you'll want to still install the the Sauce app, which will add support for the Sauce Theme and App blocks to add the embeds
2️⃣ Grab your Sauce Account ID
Head into your Sauce account, and into the 'Account details' section where you'll find your Sauce account ID (which will vary from what is shown below). Copy this account ID, as you'll be using it in the next step.
3️⃣ Specify your Account ID when adding Sauce Embed to your theme
When adding an Embed to your Theme, using the Sauce app provided Blocks, paste in your account ID into the field at the bottom of the sidebar, and you're done!
Your Sauce Embed will now appear as expected, with the benefit of Product Tags taking you to the corresponding Product Page on the specific Shopify store you are on.