I was wondering if someone could tell me more about the judge signup form. I'm not sure if I should use the judge signup form, or why I would want to do so, rather than just reaching out to my organization's network.

We use it for our events due to our organization requiring judges to opt-in before just assigning them to submissions. We do get complaints about it form time to time. It does also provide us an opportunity to include our judging guidelines after they complete the signup form.