Check out this step by step video or see below.
Search for a family/child.
Then
Click on the Add button which triggers the modal to upload a document.
Find your document, which should already be saved somewhere on your computer and link it to the child.
Once you have selected the correct child, click 'upload'.
You will then see the document on the child's profile.
Feel free to reach out to support@lineleader.com if you have questions.