In absence of individual player assignments, the PlayStation 4 and Xbox One versions of NBA 2K14 have given gamers three “Points of Emphasis” to help control their AI teammates' on-court behavior. During a game, players can apply one offensive emphasis, one defensive emphasis and one bonus “flex” emphasis.
To select your emphases before tip-off, press the triangle button on the pregame loading screen; During gameplay, hit right on the d-pad to change your emphases on the fly; In a timeout, highlight the "Point of Emphasis" icon and press the X button to adjust your strategies. If your emphases aren't saving, or if they seem to be changing without your consent, simply pause the game, go to the "Options" screen, cycle over to "Coach Settings," then make sure that "Points of Emphasis" is set to "Manual," not "Auto."
While there are no written explanations in NBA 2K14's menus or in its PDF manual about what exactly these emphases do, here are Operation Sports' educated guesses, based upon dozens of gameplay hours: