When a child is reported Absent, you can log that directly inside of mSign through the Students menu

To enter the Absence, click on the orange clock to the right of each child

Inside you can view all of the attendance options, including an Absent switch

Pressing the switch will update your fields to enter in the Absence Type and a Comment explaining the absence

When you have entered in the appropriate information, press Save to record your change, and enter your Teacher PIN to commit your changes