Products can be restricted to certain stores through the feed mapper (if you've mapped the store field and imported your products, they will automatically be associated with the specified stores in your import file) or directly from your product catalog:
To limit products based on categories or manufacturers:
Dashboard Filtering
From KatanaPIM's main dashboard, you have the ability to apply filters based on store selection. This feature transforms your dashboard view to reflect only the products, statistics, and information relevant to the chosen store.
Catalog filtering
Similar to the dashboard, the product catalog feature also supports filtering by store. This allows you to narrow down your view to only those products that are published or available in a specific store, making it easier to manage product listings and update information.