Dice rolls not showing up for players

In the Numenera system, the players fool dice more than the GM. How do my players post dice rolls? It does not appear to be an option for them. Did I set up the game wrong?

So I realized this was a feature that maybe didn't need to get added, or maybe I have to tweak how it works, but when you make a thread, towards the bottom of the page, above the submit button, are a few options. One of them is a checkbox that has the following label "Allow adding rolls to posts". Check that, and anyone will be able to post a roll. You can edit the first post of a thread to add that functionality.

In the upcoming forum update, I'm going to have that checked by default for game forums.