The great thing about LCR is the "Find Individuals and Pages" search box. Just type any search term, such as "blessing" into that box, and it will give you a link to the page you are looking for.
The Patriarchal Blessing home pages displays two icons. You want to click on the icon on the right to get to the recommend submission page. Please keep in mind that your patriarch must be using the online recommend system. If he is not, then you will need to print a recommend through MLS.
Here is the URL you requested:
https://pb.lds.org/pbsubmit/#/home