If the company you or your child is enrolled in allows parent check-ins/outs, here are the steps to do so within the Customer Portal (the link to this will come from the company you are enrolled with).
Step 1 - Choose Activities
In the Menu (upper-right corner), choose Activities.
Step 2 - Select Enrollee
Select the Enrollee's name.
Step 3 - Select Activity
Select Check In or Check Out from the Activity drop-down menu.
Step 4 - Choose Class
Next, choose the proper class from the "Select Class" drop-down list. Click Post to post the Activity.