Certificate Trust Settings for Guest User

I created a guest account on my mac. However, when I try to log in to my school's wifi network from the guest account, it asks me to verify and update the certificate trust settings. This wouldn't be a problem, except it asks me for the guest account password (which there is none) and will not take my admin username/password instead.

So, how do I get around this? (Entering no password and hitting "Update Settings" doesn't work either).