In order to view comments made on an attendance, you must first make an edit. Refer to article on how to make an edit
https://support.smartsapp.com/portal/en/kb/attendance/staff-atendance/editing-of-attendance-records
Go to the “Attendance” section within the Staff Attendance module. Select the “Present” attendance status from the drop down menu.
When attendance has been edited, an information icon will be displayed next to the check-in time of the staff member.
Click on the three dots located beneath the Action button next to the desired staff member. From the list of options, select “View Details.”
You will be presented with a modal on Attendance details, scroll down to view comments made during an edit.