What @michiel was referring to is that the question you asked here is really specific to the WordPress application and the plugin you are using. If you want to customize it, we suggest you contact the plugin's or WordPress' developers to know more about that.
Please note that Bitnami packages and configures already existing applications. However, we can only offer support and help on basic and most frequent application configurations. Always based on the default configuration or on our guides.
Let us know if you have any other questions regarding the Bitnami configuration.