Now that you've captured a bunch of portals it's time to link them up and secure some control fields. Control fields are created by linking at least three portals in a triangular shape. This will prevent the enemy team from linking portals across your control fields, while you will be able to earn more AP than usual. But where's best to install control fields? What dictates which portals can be linked to which other portals? Well, that's what the chat function in the Comms menu is for! Or you can just be like me and install links at whichever portals you possibly can.