Integrate hcaptcha.com code into a file which is a SMARTY .tpl file, so it really works on the website (meaning it will block user if captcha is wrong or allow if is right). I think that the basic PHP knowledge and an experience with SMARTY is required.
PHP knowledge, HTML knowledge, ideally experience with setting up captcha like recaptcha or hcaptcha.
provide me with the file and i will start working in an instance! i can see you are offline now so whenever you are online check my bid and i can surely help you.