Create attendance measures using the Bromcom OData feed.
First add the AttendanceSummary then create some measures.
Calculating the Attendance
Create a measure for attendance using columns from the Bromcom OData feed and set data type to Percentage with 2 decimal places.
Attendance % = SUM(AttendanceSummary[PresentAndEducationalActivityCount]) / SUM(AttendanceSummary[PossibleCount] )