Any PDF you upload to your Resource Library can be renamed directly within the Resource Library, but in no other place.
1. Start by accessing the Content tab in the dashboard
2. Select Resource Library under the Content tab
3. You will see a list of your PDFs inside of field-boxes that allow you to rename these PDFs
4. Click into a fieldbox and enter the title you desire
5. A blue checkmark indicates that it automatically saved, then select Publish to make your changes live