Google Drive:*
Click on, "Open" in the upper right hand corner.
Select," Open from Drive". **
Click on the PDF you would like to open.
Click on," Select".
One Drive:*
Click open in the upper right hand corner.
Select," Open from One Drive". **
Click on the PDF you would like to open.
Click on, "Open".
My Device:
Click open in the upper right hand corner.
Select," Open from My Device".
Navigate to the location you have the PDF stored at.
Click on the PDF you would like to open.
Click on, "Open".
*If this is the first time adding this Google Drive or One Drive account it will ask you for permission to access the account or you removed the linked Accounts you will have to link the account again.
** If you have more than One Google or One Drive account linked it will ask which account to access.