First the form will need to be on your website. Head over to your website and copy the link to the form.

Now that you have the link copied, lets add it to a saved message. Go to contacts > saved message.

Click add on the the top right corner

Click either saved reply or saved email

Create your message. Make sure to paste in your forms link into the message. You will want to, in the replacement string section select contact and verification token.

Have your curser at the end of your forms link, and click insert. Your link should look like this https://mysite.com/new-patient-paperwork/?~Contact.VerificationToken~

Now click save

Once your saved message is created, you are ready to start sending it to patients. Go to contacts > conversations

Type in the patients name in the text box and click on them

Now click the pencil icon to the left of where you would type a message to the patient, and click on the saved message you created

Then click send