It´s just a tile that has the ability to move ingame.
These would be the events you could use in JCS.
1) Movable Tile - Put this onto the tiles you want to move automaticly ingame
Properties.
"MoveOnTouch": The tile will move when touched
"Wait": How many seconds must pass until the tile moves, if MoveOnTouch is flagged, it´ll move after this many seconds after touching it. If MoveOnTouch is not activated, it´ll move after this many seconds after starting the level

2) MovTile Marker: This one is neccesary, or JJ2 will crash when the tile should move. It marks where the tile should travel. If you wan the tile to go special path, you put these markers to tell the tile where to move.
Properties:
"Direction": 1 = Up, 2 = Down, 3 = Left and 4 = Right.
"Distance": How many tiles the moving tile will pass, it must be enough so it gets to the next marker. If you want to create a loop, you just create one with the markers.


This idea is confusing but this is my best explanation.