Yes you can manually add attendees to reserve tee times. To do this navigate to the event in your account and press the ‘add attendee’ button. This will open a modal to allow you select the tee time and the number of players you want to add. You will be required to add full names of each player. These players will appear on the attendee list as ‘unpaid’ because they have not paid via Golf Day Pass so you should be able to easily see which players you require payment from on the day of the event.