There are two ways to mark a child as late.
If the parent sends a text saying "Joey will be late" for example, Fastoche will automatically record this on the attendance record and a clock will appear next to Joey's name on the status board.
If the parent has called to let you know they are running late you can select the child and just to the right of the check-in button you will see a clock icon. Click the clock and you can enter notes about the reason they are running late or what time you expect the child to arrive. Once again, a clock will appear next to the child's name on the status board.