// SELECT MAIN COMP
var mainComp;
    for (var i = 1; i <= app.project.numItems; i++) {
        if ((app.project.item(i) instanceof CompItem) && (app.project.item(i).name === "00 MAIN")) {
            mainComp = app.project.item(i);
            break;
        }
}

// MOVE LAYERS TO MARKERS
app.beginUndoGroup("Move Layers to Markers");

for (var m = 1; m <= mainComp.markerProperty.numKeys; m++) { //from left to right
        for (var l = mainComp.layers.length; l >= 1; l--) {

            var markerName = mainComp.markerProperty.keyValue(m).comment;
            var markerShape = markerName.split('-')[0]; // from "SHAPE 1 - EXAMPLE" to "SHAPE 1"
            var markerTime = mainComp.markerProperty.keyTime(m);

            var layerName = mainComp.layer(l).name;
            var layerShape = layerName.split('-')[0]; // from "SHAPE 1 - EXAMPLE" to "Shape 1"

                if (markerShape == layerShape) {
                    mainComp.layer(l).startTime = markerTime;
                    break;
                }
        }
}

app.endUndoGroup();

// PARAMETERS
var comp = app.project.activeItem;
var layers = comp.selectedLayers;
var startTime = app.project.activeItem.selectedLayers.inPoint;
var waitFrames = 5;
var endTime = startTime + waitFrames;
var fps = comp.frameRate;
var frameGap = waitFrames / fps;
var spacingY = 60;
var startPosX = 950;
var moveX = 300;
var endPosX = startPosX + moveX;
var startPosY = 100;

// SET KEYFRAMES
app.beginUndoGroup("Set Keyframes");

for (var i = 0; i < layers.length; i++) {
    var layerPosX = layers[i].transform.position.getSeparationFollower(0);
    var layerPosY = layers[i].transform.position.getSeparationFollower(1);
    var name1 = layers[i].name.split('-')[0];
    var name2 = name1.split(' ')[0];
    var layerOpacity = layers[i].property("Opacity");
    var layerScale = layers[i].property("Scale");
        if (name2 == "SHAPE") {
            while (layerPosX.numKeys > 0) {
                layerPosX.removeKey(1);
            }
            while (layerPosY.numKeys > 0) {
                layerPosY.removeKey(1);
            }
            while (layerOpacity.numKeys > 0) {
                layerOpacity.removeKey(1);
            }
            while (layerScale.numKeys > 0) {
                layerScale.removeKey(1);
            }
        }
    layerOpacity.setValueAtTime(layers[i].inPoint, 0);
    layerOpacity.setValueAtTime(layers[i].inPoint + frameGap, 100);

    layerPosX.setValueAtTime(layers[i].inPoint, startPosX);
    layerPosX.setValueAtTime(layers[i].inPoint + frameGap, endPosX);

    layerPosY.setValueAtTime(layers[i+1].inPoint, startPosY);
    layerPosY.setValueAtTime(layers[i+1].inPoint + frameGap, startPosY + spacingY);

    layerPosY.setValueAtTime(layers[i+2].inPoint, startPosY + spacingY);
    layerPosY.setValueAtTime(layers[i+2].inPoint + frameGap, startPosY + spacingY*2);

    layerPosY.setValueAtTime(layers[i+3].inPoint, startPosY + spacingY*2);
    layerPosY.setValueAtTime(layers[i+3].inPoint + frameGap, startPosY + spacingY*3);
}