If you have more than one domain name for your website or you just have a domain name that you are not using at the moment, then you can add it as an alias domain. Then when someone goes to that domain they will be redirected to a location of your choice rather than just receive a "404 Page cannot be found" error. To add an alias do the following.
Ensure that the DNS, for the alias domain, is setup somewhere and pointing to your hosting server (details in your Welcome email).
Add the Alias domain, enter it as the "From" address.
Ensure that you are adding it to the correct existing website.
Do not add a redirect method, leave it blank.
Enter the address as /web/ - This will take you to the homepage of your existing site.
Once this is completed you will be able to type in the new Domain Name and will be directed to your existing website.
Please Note: You may need to wait for propagation to complete and this can take up to 72 hours depending on where your new Domain DNS Server is hosted and the settings you have set. On our servers, with default TTL settings this should happen within minutes but could take up to an hour.
You can also redirect it to another website or another page on your website by adding in the redirect and then adding the full URL to redirect to e.g. https://www.mysite.pw/