Can't export FCPX 10.2.1 project & library to external drive

I have a project started on FCPX 10.2.1 that I would like to duplicate (library, project & all clips) to an external drive to be edited by an editor also using FCPX 10.2.1..

Although this seems like it should be a simple process, I am having trouble finding current instructions.

I have tried:

http://help.apple.com/finalcutpro/mac/10.0.6/#verb8e5fcf4

and

Final Cut Pro X: Edit your project on a different computer

but these keep asking me to duplicate a project using the "Project Library", which does not seem to exist on v10.2.1

Any suggestions? Thanks in advance.