Description

The sample demonstrates the ability to dynamically unite the actors into groups. 
On Step 0, "Ball" actor attaches to "Rotor" actor, and rotates together with it till the moment of detaching on Step 11.
When on Step 8  the "Ball" is positioned over the hole, it starts moving downwards, at the same time continuing the movement together with "Rotor".

Scenario

Actor: Rotor   
Commands=1
1 11 Rotate 0 0 18

Actor: Train
Commands=1
1 5 Move 0 1 0

Actor: Boll
Commands=5
  0   0 AttachToGroup Rotor
11 11 DetachFromGroup
  8 10 Move 0 0 -1
  9 10 Move 0 0 -1
10 10 Move 0 0 -0.46

Actor: Boll-Next
Commands=3
  8 10 Move 0 0 -1
  9 10 Move 0 0 -1
10 10 Move 0 0 -0.46

Step 8 - Step 10

Notes

AttachToGroup command requires that the actor, attaching to which will take place, is already a group.