The first step is navigating to the Form Library and choosing the form that you want to edit.
From the Form Settings menu bar, choose Form submissions.
Here, you can leave the Redirect option selected in the first dropdown, and then choose either Outside URL or Instapage page in the second dropdown.
If the page is not created inside your Instapage account, or it's inside a different workspace, you can use the "Outside URL" option by entering the URL of your destination page in the text field provided.
Don't forget to create a custom “Thank you Message” and set how many seconds the message will be displayed.
You can also select the "Thank you" message and remove it. This will display a "Processing..." message once the form is submitted. If you wish to translate this message into another language or delete this as well, and there will be no text displayed, you can do so by using the code from this article here: https://d.pr/y0Qwiy.