Creating a redirect is easy. As a website customer, click Manage Website > Redirects.
You can view any existing redirects and click Add Redirect to create a new 301 Redirect.
You can specify the origin URL and the destination.
If you're just setting up your site you'll likely want to add redirects from your old content to new content.
There are also times you'll want to redirect a URL to another domain entirely. In the example shown, you can redirect to a custom sitemap for example.