The form for the post updating works most effectively if it is placed on the Single Page. You can create such a template for the default WordPress post type (e.g., Posts, Pages) or a custom post type created with the help of the JetEngine plugin.
To create a form, go to the JetFormBuilder > Add New tab on the WordPress Dashboard.
Give the form a name, and add as many fields as necessary. For this tutorial, we created a few