Once you create a Focusmate account you will be able to schedule coworking sessions. You simply choose the time(s) that you want to book sessions for and you will be matched with a coworker that has also requested that time block.
When the session begins you both join a virtual meeting room and briefly discuss your goals for that session. Then you both quietly cowork and update one another on your progress via messages throughout the session. At the end you check in with one another, briefly discuss your progress and end the meeting.