The Summary section of the calendar contains the following information:

Absences – a summary of all classified and planned absences in the given month, including minutes of absence in the case of hourly absences.

Payroll components – a table with data on planned and worked hours as well as all overtime components, broken down by days of the week.

Absence components – a table containing components of underworked hours broken down by individual days of the week that have been classified.

Balanced payroll components (for payment) – overtime components that have not been taken and will be paid out if still unused.

Settlement period – a table with summary data from all calendars for the given settlement period, facilitating planning and settlement of overtime, with a summary of overtime payment for the entire period.

You can find more information in the article: Summary