From Service-Now, a customer receives an out-of-the-box instance. Note that each and every organization has its own marketing and branding policies for IT applications. Basic configuration is an essential part of a Service-Now instance, in which you need to configure the entire Service-Now website (portal or frontend) for end users. From the IT point of view (where you can see incident, problem, change, self-service, and other such modules), you are allowed to change the theme of Service-Now and split the application pane at your convenience.
To step through this recipe, you should have an active Service-Now instance, valid credentials, and admin role.