Services

Hello, I am working on my services now. I have them on my front/home page and then they each open in a different page. I also made a page with services which will basically be a repeat of the front page only dedicated to services. In the services menu entry, I have direct sublinks to each service page. So, for all of this to make sense, I wanted to kindly ask you how can I change the service page name from service to services. Also, can I kindly ask what is the use of service types and service tags? Waiting to hear from you and thanking you in advance, Kind regards, Frederico Pessanha