In order to get help, you must answer the questions.
Questions 2 and 3 on post no 8 have not been answered. Nor has the third paragraph of posting 10 been answered.
The form that you have illustrated has no meaningful information on it, just numbers. Where do Customers and Transactions come in to a Db dealing with race entries and start positions? Where are the Entry's names, class, and car number entered?
I don't think you have put much effort into this project and certainly don't seem to know what output you want.
My guess is that you should have a form in which the Entry's name, class, and car number are entered, then a command button that when pressed, shows the heat and feature numbers. I then presume that this is the information that gets saved.
Phil