Add a new Website

i downloaded and installed piwik locally on my machine.
I have installed it for local machine i.e
now when i try to add another website/webpage within my parent domain or say
it doesnt save in list of websites.

When you enter your website information are you scrolling to the bottom and clicking “Save”?
This is the problem, scroll all the way to the right and click the Green Check Mark this will save the changes to the website.