add more than one entry into a database from single form

[The_FedEx_Guy]

I have a page that has 1 form that allows you to add 1 job.
I want to be able to have a button or something that says add job and add another job.
When creating the database I did not create a table to hold the order just add the job.

I am attempting to create a new version of the site with order referencing job_id and customer_id so that a job can belong to an order. And I can an order that has many jobs.

What is the best way I can do this and then I will need it to be displayed on the invoice.

I also need to beable to create an invoice for the particular job.
but that does not need to be done here.

[The_FedEx_Guy]

I have posted previously, but the requirement from my friend has changed somewhat.

I have a add job page (add.php) and I need to add a button/link to add more fields of the same to add a job to the chosen customer.