You are browsing the old Contao 3 extension repository. Contao 3 is no longer maintained as of June 2019! You can find the Contao 4 extensions on extensions.contao.org.
Extensions > custom_be_modules
Extend your backend navigation to your needs and forward them to any backend url you want to.
With this module you can easily extend your backend navigation to your needs and forward it to a certain backend url.
This gets more interesting in connection with the catalog as you can now create a BE navigation link to a certain catalog.