Hello, @Kazi Sabit,
Unfortunately, there is no such option in our theme to add the content in the My account off canvas section, that form is coming from the WooCommerce plugin and it is the default one.
If you want to add the content in the My account off canvas section, you have to Customize the theme core files.
You can check its code in file: et-core-plugin\app\models\customizer\functions.php
If you want paid Customization services submit a customization request to WPKraken team.
Regards 8Themes Team.