Training is not a one time, one week, get up and running procedure for a company.
It is a continual process involving the commitment of the company and the involvement of the full design and manufacturing departments.
Making available 3-4 mechanisms for learning and keeping up-to-date will insure a well-trained and high quality workforce who will be and stay productive.
Skimp here and you lose in every area of design and manufacturing quality and efficiency gained by introducing a high level 3D CAD system.
CAD managers and systems people should be required to learn the system and get periodic training regardless of their role in the design and documentation process.