How will the multi-site option 1 checklist with several products look like: a checklist for each site with all its products, or is it just 1 checklist with all the sites and all the products?

In case the producer does not operate a QMS, there will be a single checklist covering all the products and sites.

In case of a Multi-site option 1 with QMS, each sampled site shall be documented in a separate checklist