Hi.
1.
Number 1 / 2 / 3 / 4 is the section where each item has to stop.
2.
Line 1 is the first priority to move, and number 2 and 3.
3.
If there is an item in position 1, item 2/3 should be stopped.
After that, if item 1 starts and passes through 4, I want to implement that the next item starts. (At this time, if there is an item on line 1, the next item must be moved by line 1. If line 1 is empty, the item on line 2 moves, and if line 1/2 is empty, it must move from line 3.
Can you tell me how?
