You can upload entire PDF’s directly into Presenter using the ‘Upload presentation from PDF’ functionality. To access this feature please go here: ‘Presentations > Upload Presentation > From PDF’. This feature works best when the ‘aspect ratio’ of your PDF is the same as the Presenter slide viewer.
Please note: The ‘Upload presentation from PDF’ functionality is not, by policy, active for all system users.
If you just want to add one or two slides from your PDF then you need to export your PDF to a JPEG format first. There are a number of online tools to help you do this, for example: http://pdftoimage.com. Once you have your PDF as a JPEG – simply use the ‘Full Screen Image’ template to upload it as a slide in your presentation.