With webhook triggers and loops, you can do it like this, as an on-submit action:
- Add a webhook workflow, copy the webhook URL.
- Add an on-submit action, use a trigger webhook action and send over the rowID of the quote request, and the comma-delimited list of items.
- Use two query steps to query the request ID and the items list from the body of webhook payload.
- Use a split text module to split the list of items.
- Loop through that, and add them to your helper table of items, with the same request ID for each row.