Hi @Jon Hall
The Excel Find Row will only return 1 record, as you’ve discovered.
FYI: Most Zap triggers/actions/searches are configured to work on a per record basis, rather than in bulk.
NOTE: Be mindful that handling multiple records in line items (aka arrays) involves additional logic which can often mean more advanced concepts for configuring Zaps.
Consider using Airtable to organize your data instead of Excel.
Airtable has APIs that can be leverage: https://support.airtable.com/hc/en-us/articles/203313985-Public-REST-API
App APIs can be leveraged via Webhook steps in Zaps: https://zapier.com/apps/webhook/integrations#triggers-and-actions