When you need to download multiple files from the Files and Notes section you will need to follow the steps described below. This is applicable for Jobs, Quotes and Contacts.
2. When in the Files and Notes section access the "Share Files" button.
3. After doing that select the actual files that you want to download, you will see a "check" symbol the for the selected files.
4. When the files are selected access the "Share" button from the right hand side.
5. Finally access the "Download" button and select a folder to save the files on your local machine.