If he brought in his work AC9 work environment it will need to be added to be visible.
Or are you saying it is not available as an option to include in your work environment?
As a check, try setting your WE to the default [US] AC11 WE and see if it is available.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"