Advanced Search link in sidebar

Hello everybody,

I am setting up a Grav website with the learn2 theme. I also have installed the TNTSearch plugin.
On the site, I saw there was an “Advanced Search” entry, right below the “Search Documentation” in the left sidebar, which points to the TNTsearch.

But, on my site, I do not see this link after installing TNTSearch. Probably I have to chnage something, but I do not know how to include this “Advanced Search” link in my sidebar.

Can anybody help please?