The Terms and Conditions section can be enabled/disabled from Theme Options-Listing Page-LISTING PAGE LAYOUT MANAGER
How to manage these fields to show in the 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-Listing Page-LISTING PAGE LAYOUT MANAGER you will find the option to disable the section