Type the system name or whatever else you want to link(item,ship,character,system,corp) in the chatbox of teh channel you want to link it in. Highlight it like you would when your copy pasting something.Next right click on the highlighted word(s) and select auto link. There will be a list of types of items you can link and you select the appropriate one. If your trying to link a ship than select ship, if your trying to link a module select item etc. once you have done this the word(s) should be yellow. Press enter and it will show up in the chat linked for people to click on.