As a school with many nursery children who attend different sessions, adding future absences can become quite tedious. Previously on our old system it was a simple tick box separated in days and AM/PM sessions on an enrolment tab on the child's individual account. This would connect to the register and we would just tick the boxes in which the child attended. It was very easy and quick to edit. It was also an easy way to view the days a child attends all in one place.
Thank you for your suggestion. We are currently working on enhancements to the Out of School/Future Absence/Registration Manager functionality that should include your suggestion. I will post updates here as the project progresses.