Starting theme update 2.8.5 there is a new section on Property Page – Terms and Conditions

How to manage these fields to show in submit form

Enable the options to be part of submit form

Then the fields show in Submit Form -> Details Section

How to change the section text label

Go in Theme Options to change the text label

How to disable the Terms and Conditions section

In Theme Options-Design-LISTING PAGE SETTINGS you will find the option to disable the section