I am designing a small workflow that focuses on when and item field with multiple values allowed to be replicated to a different list in a different site with identical list structure.
Take for an example a task list, where you can have and assign multiple people assigned to a task. I want that value set to be replicated and copied across to a list when items have been modified.
You can use the create list item and choose which fields from the list you want to replicate to the other list.
You can also use the update list item if the replicated items already exist and you want to update them.