You could have a portal to your related table based on the ID and set the relationship to "Allow creation". That way you can just type in the next row on the portal and it will create the related record.
Thank you for your post!
JimmyCox offered a great suggestion.
I am also going to move this thread from the FileMaker Community Feedback Space, which is specifically for input on the Community itself, to the Discussions Space where others might find your post easier and offer further advice.