If you go to Reporting > Reports > Attendance (tab) > Custom Attendance Report
Please refer to - Custom Attendance Report
Set the dates you require and there is an option to select 'Include Y Codes as Authorised Absences' (above the Choose button).
Once the report is run, all Y codes will be counted as absent to more accurately reflect the overall attendance percentage. There is a disclaimer to say these figures do not conform to the DfE calculation for attendance, so for official purposes the report will need to be run excluding the Y code.
In addition to the change to the Custom Attendance Report, the Dashboard also displays attendance for the last five days, counting Y codes as absences. This enables you to see the basic trends for the past week.
Other reporting areas in ScholarPack do not count Y codes in attendance figures at the moment.