To upload a PDF, start by clicking on the Add New Item button on the top header. Then you can upload up to 5 documents or photos per item. To add document, you can either drag and drop the PDF into the box or find the document on your computer to upload.
Once you've selected the PDFs and photos you'd like to add, you will need to select the item type Site Photo or PDF. Then you can add as many additional details as you'd like before adding the PDF into your project.