You'll need something more. It won't happen automatically. The "allow creation..." option you can specify in the relationship is used slightly differently than what you want here. It works such that you can start entering data in a field from a related record and FileMaker copies over the data from the parent record's match fields automatically.
Right, that's how I thought this would work but was unsuccessful. Can you tell me what further information I'll need here?
thanks so much.
I need to know more about what you are trying to do and why.
Automatically creating a related record where all fields except the match field(s) are empty is rarely of any real use until you need to add data to at least one other field and you can easily create the related record then instead of when you first create the parent record.