Add items to the my account details

Hi, don’t know if this is the right forum for my question, but…

I Would like to add two items on the my account/editing account details page. Why? Because I’m using a simple forum-plugin which provides two features (signature & announcements). The signature is a text-field and the other one is a simple checkbox.

Because I’m using WooCommerce the User are not working with the default WP-Backend Profle Editor which includes the forum-settings. Users will be forwarded directly to the WooCommerce my account page.

I know the User Meta Name of the plugin (asgarosforum_signature & asgarosforum_mention_notify) but I don’t know how to enhance the my account details page. Is there any way? I assume by using something within the functions.php and maybe someone have an idea where I can found some more informations about that…

Thanks,
Frank