How do I connect with other members as teammates?

To ask another member to become your teammate, you need to view that members profile. You can view a profile by clicking the members username in the Member List, or by clicking on their username in the Members Online list in the left column. Once on the members profile page, you would need to click on the button labeled 'TEAMMATES' and then select the option 'Request Teammate'. That member will be notified that they have a teammate request and then they can decide if they want to accept you or not.