Hello Praveen Srinivasan,
You can see [this](https://gluu.org/docs/gluu-server/4.5/authn-guide/lockout/) to know about lock state.
In case you want to customize pages, then this guide may help you: https://gluu.org/docs/gluu-server/4.4/operation/custom-design/#customizing-public-pages
https://gluu.org/docs/gluu-server/4.4/developer-guide/tips-cust-script-pages/
regards~Mostafejur Rahman