Submit button placement on a form with long columns

1. Can you have multiple submit buttons in a form?
2. Does the submit button go inside the form?

Can you have multiple submit buttons in a form?

yes, multiple submit buttons can include in the html form. One simple example is given below.

Does the submit button go inside the form?

You can tie a submit button to a form that the button doesn't live inside of. The trick is to give the form an id and then reference that id with the button's form property. With this setup, clicking the Submit button will cause the form to be submitted.