In the Admin Dashboard, click on the Get Started tab at the very top left corner. Open up step 5 "Set up family paperwork". Drag and drop your documents into the gray space that says "Click to upload PDFs".
To ensure proper upload, please make sure you only submit PDF documents that are in the standard 8.5 x 11 page size.
Documents take about one week to appear in your Admin Dashboard under the Student paperwork and Documents tab.