To download a document from the Documents section, click "View/Print Document" on the left-hand side of the Screening Management page. Then, either search for the document in the search box at the top or select the document from the list of documents below the search box. Once you've found the document you want, click "Download" on the right-hand side of the page. 

Some documents, such as ASQ questionnaires, will prompt you to select the interval/age range for the document you would like. For example, if you click "Download" for the ASQ-3 English Questionnaire, it will ask you to select which interval of the questionnaire you would like to download.