If required, the webmaster can provide activity leaders with the ability to upload PDF and other documents.
Once the Document page is established, people with authority can simply click on the upload button, and select the document in their computer or tablet they want then click "upload".
Ensure that your document file name describes the nature of document. If the file name for your game schedule is 123doc, that is how it will appear! So change your file name to describe the subject properly.