It is most often the case that the CAD Manager is planning for software purchases, rollouts, migrations and expansions. They are the forward thinkers that take the time to strategically look toward the future. CAD Managers are most likely to be the first adoptors of new releases and new tools. They drive the firm toward the future by getting there before others do.
Users tend to follow the lead of good CAD Managers. They know that the CADMAN has the best interest of the firm and the users in mind. They tend to mostly go along with their suggestions and roll-out plans.
Users often bring new tools into the firm also, but the global use of that tools is still defined by the CAD Manager. The CAD Manager has to be a leader of technology change. They need to prep users and move them forward.