I offer 3 options - 45 min - massage 60 min - massage 90 min - massage If someone book 60 min massage at 12,  the system reservation block from 11:00 to 13:00. And I loose to possibility to work between 11:00 and 12. If someone else  want to make a 45 min massage, the system is already blocked from 11:15 to 13:00. So I lose 45 min. working hour before 12:00. In short, for any reservation, I lose the 1 hour befor...What can I do ?  45 min. - Duration : 45 min. Slot Step: 15 min. Block before : 0 Block after : 0 60 min. - Duration : 60 min. Slot Step: 15 min. Block before : 0 Block after : 0 90 min. - Duration : 90 min. Slot Step: 30 min. Block before : 0 Block after : 0