how to get servers to update

Alright, I am closer to getting Uyuni set up the way we want it. Now, how can we get our servers that are registered to update through Uyuni? I was only given a option to schedule the update, so I picked as soon as possible, but they are all waiting and I do not know why: [cid:image001.png@01D85422.7C84AA40] Jamen McGranahan Associate Director of Library Technology & Digital Services Jean and Alexander Heard Libraries, Vanderbilt University 615-343-1614 | jamen.mcgranahan@vanderbilt.edu<mailto:jamen.mcgranahan@vanderbilt.edu> he/his/him [cid:image002.png@01D85422.7C84AA40]