You can use the bulletin board to display text and images to all patrons. Two types of documents are available - Document and Map. Simply click the Add button and type in the document name and optional expiration date and then click on OK. Then type or paste in whatever you'd like to display and save your changes.
You can also cause the content to appear in the Item Details for all items in a certain call number range. When creating a new bulletin, select Map from the document types popup menu and enter a call number range.
Map files will be displayed with a book icon next to them in the bulletin list, documents will have a note icon next to them. Any documents with the word "Help" in their title will have a help icon displayed next to them.