How to redo rental agreement when guest hasn't completed all info

Is there a way to resend the rental agreement to a guest so that she can fill in missing info?
I have custom fields that the guest fills out.
One is for names and ages of guest - this guest only provided names
A few others are related to dog info - breed, weight, flea and tick preventative, etc. This guest only provided the name and breed.
How do I have her go back and complete the missing info?
I searched help topics but found nothing.
Thanks.

Hi Dewey,

You can go into their Booking, Legal tab, and Request that they sign it again. You may want to edit the email to emphasize the information that they did not provide.

Or, if you've already gotten the information some other way, you can manually edit it in the Custom Fields tab. That way it'll already be there for them.