How can I remove certain header not to shown in the preview submission?

How can i remove certain header not to shown in the preview submission?

It seems that your are able to add the headers to be hidden in the preview before submit page.

Let us know if you need further help.

Is there a download button function on the preview page?

Unfortunately, there is none, however, may I ask why you need to download during this stage?

Please note that once the form is submitted, you can create an autoresponder email and the user will be able to receive a copy of their submitted data.

Setting-up-an-Autoresponder-Email

In addition, you can customize a PDF Submission Report and attach it in the emails.

How-to-Customize-PDF-Submissions-Report

How-To-Include-Submissions-As-PDF-Attachment-In-The-Email-Notifications

We need the download option for the other party to download their
submission so that they can have a copy of what they have submitted .
The form is create for all "parents" in childcare to fill up certain info
and booking of timing etc. It is difficult for me to create one by one with
their email for the autoresponder. I tried, but it keep sending back to my
own email even though i use another mobile number.
...

We need the download option for the other party to download their submission so that they can have a copy of what they have submitted.

4Well, you can simply create a PDF document and attach it to your autoresponder. That way, when the form is submitted, it will send a copy of the submissions as PDF to your form responders.

You can also add a print button to your form: Print-Button-on-Forms

It is difficult for me to create one by one with their email for the autoresponder. I tried, but it keeps sending back to my own email even though I use another mobile number.

You just need one email field to your form, the autoresponder will send an email to the email address entered in the email field.

Let us know if you are referring to something else.

4Well, you can simply create a PDF document and attach it to your
autoresponder. That way, when the form is submitted, it will send a copy of
the submissions as PDF to your form responders.
You just need one email field to your form, the autoresponder will send an
email to the email address entered in the email field.
I still do not get it. Meaning i have to do it manually? Meaning i have
200 parents response, i will need to attached 200 times? Maybe can you help
to show steps by step through video?
Furthermore there is no email required by the person filling up the forms.
You can also add a print button to your form: *Print-Button-on-Forms
*
This is not what we wanted as now majority of the responder complete the
form on their mobile, outside of home etc. Also it is convenient instead of
printing it out as it is not an important document to print. We want to
have environment friendly and paperless.
...

If you want to send a PDF document that will contain submitted data to your users via Autoresponder Email, you need to add an email field to the form, create an Autoresponder Email, and set the PDF Attachment option to YES inside of the Autoresponder Email settings. You need to do this only once. 

You can find here how to create an Autoresponder Email. 

Setting up an Autoresponder Email

Once you create it, go to the Advanced tab and set The PDF Attachment option to YES.

Another option is to add the PDF Document download link to the Thank you page. 

Setting up the Thank You Page

Thanks. Will try the next day.
Meaning, i have to the form with email field? Email validator?
...

Hi Huilinglh1987,

Yes, you need an email field on your form so that client who submits and inputs their email into the email field get the auto-response notification.

Let us know if you need further assistance.