 Command entry:
Command entry:  Create panel
 Create panel 
 (Helpers)
 (Helpers)  Object Type rollout
 Object Type rollout  Crowd
 Crowd  Setup rollout
 Setup rollout  Behaviors group
 Behaviors group  Click the New button.
 Click the New button.  Select Behavior Type dialog
 Select Behavior Type dialog  Scripted Behavior
 Scripted Behavior
            The Scripted behavior lets you create custom behaviors using MAXScript. A scripted behavior can incorporate one of three behavior types: Force, Constraint, or Orientation.
For detailed information on scripting behaviors, see the MAXScript Help, available from the Help menu.