This is a community forum platform, third party or possible licensed script coding isn't shipped with the product.
What is presented in the stock archive you downloaded through the member area is the forum package itself, any site based navigational items are outside of the scope of the product and would be third party as it does not exist in the forum package.
There are millions of options for navigation, and many in various other coding languages, you should find what best fits your community.
If you have problems on these user to user support forums then I would encourage you to contact the vendor via the ticketing system.
