1) Click on the 'Main Menu' (top lefthand corner of the App).
2) Select 'Booking Restrictions'.
3) Click on the day that you would like to enable bookings (August 1st, for example).
4) Click 'Remove' next to each time window that you would like to enable bookings.
5) Click 'Done' at the top right.
*Instructions on how to disable bookings can be found here.