As far as I know, there has to be public input. I have attended several USFS planning meetings over the years. They have usually been announced on the forest's web page or via social media.
Just googling around this morning, one day after the designation of the new monuments, I found these:
Friends of Nevada Wilderness (has a Take Action section)
http://www.nevadawilderness.org/gold_buttesitemap for Dept. of the Interior - there may be something here. It does the have the Dept's Strategic Plan.
https://www.doi.gov/sitemapCoolmom's info above is better than this..
