landing page whmcs - lagom

Hi, I need to create custom pages for whmcs (legal page, about etc) + landing Page with price etc of product/service. it takes knowledge in whmcs, smarty. Ex. https://www.webhosting.uk.com/wordpress-hosting , https://chemicloud.com/ , https://chemicloud.com/terms-of-service , https://chemicloud.com/about-us

Thanks