You can set age requirements from the Class Details page. This setting prevents signups for children who are younger than a certain age.

Step 1:

Go to Settings and click Classes in the menu bar on the left.

Step 2:

Click into the specific class you want to edit and then scroll down to the bottom to find the Advanced settings. Here you will see an edit button on the bottom right corner.

Step 3:

Fill in the information and remember to click update!