The manager lists 10 forms. I edit one of them. Can I then use the same form again on another page of the site?

Yes, I discovered how to do this. You edit the form and then choose Save as Copy. Simple. But why can't the manual say anything about this?

Dear Joanne,

Save as Copy is a good solution, but you can also add the shortcode of the same form to another page. This way the submissions of them will be under the same table, while copying the form will keep them in separate tables.

Thank you.