How do I customize Thank you page?

Can "Thank you" be improved, either by you or by me ? At present, the message just sits there; it's not obvious how to close the message and resume. The behaviour I'd like is something like one of the following:

When the user has submitted the form, the Thank you message is accompanied by 1 ,2 or 3 buttons, as follows

1 button: (1) OK, and then the message redirects

2 buttons: (1) Another form ? if selected TY closes and a new blank form is shown (2) No, thanks: if selected TY closes and if necessary redirects

3 buttons: (1) Edit form ? (same effect as edit submission) (2) Another form ? (3) No, thanks

Hope one of these is possible !

many thanks

You may have links placed on the Thank you page by editing the message instead of buttons. Inserting buttons cannot be allowed since it requires some Javascript code to redirect the pages. Due to security reasons, all the Javascript code injected to the form will be stripped. 

Please see the screencast below that can help you with adding the links to a new form and editing the submission.

Hope this information helps!