How can i open multiple documents side by side?

In order to open more than one document at the same time in Fortis you need to “pin” each document you want to remain open. To pin a document:
  1. Open the document you wish to keep open.
  2. Select the Window drop down.
  3. Select Pin Up to keep that document displayed.
  4. You can now open and pin as many documents as you wish.