You may add to the wiki by sending an email message to the IT Specialist, email@example.com, describing your question, problem, or solution. If you think you might want to add to the wiki on a regular basis, consider requesting a user account for this website from him. With a user account, you could author articles directly into the wiki.
Another possibility is to use the feedback section at the bottom of any article (including this one).
See where it says “Was this page helpful?” Pick a face, either happy or unhappy. If you don’t you won’t be able to submit your feedback. Where it says “Type your feedback here…” you can enter whatever you want, including a request that a new topic or question be entered in the wiki.