I want to add "Save for Later" button on each page in Multipage Form.

Consider this scenario:

a) Your site uses multipage Competition Form.
b) The Participant logs in to the site and starts filling up a 5-step form.
c) During the 3rd step, the participant leaves without completely finishing the form.
d) Next day, the participant comes back and logs in to fill the remaining section of the form but see that his previously filled inputs are all gone!

I am facing such issue while creating a multipage competition form for my client's website.I want to add save for later button on each 4 pages of this form and finally save and submit button on last i.e. 5th page of the form.

Please help me resolve this issue.

We do not have a save button, but it is possible to save a form and continue later. 

You might consider using one of the following options:

1. How to Enable Auto fill feature - save form entries to continue later 

The Auto fill method is based on browser local storage. It is saving the form data on the user's browser, so the user can open the form later and he/she will see the past data.

Note - The user will need to use the same browser to access data.

2. How to save a form to continue later (Session method)

The Session method is saving the data on our servers. With this method, you will need to use two forms, one for session generation and second as primary. Then users will be able to access their sessions from any locations.

Hope this meet what you are looking for.