question

1. You have to differentiate the slots in racks and floor storages somehow. An easy solution would be to set different zone IDs for both in the address scheme of the objects, then filter for the "Rack-Zone" in the Find Slot activity (slot.zoneID == ...). You could also use slot labels as an alternative method.

2. The pallets do not physically fit into the slots in this orientation, so they are placed beside the slots (the same happens if you move an item into a queue that is larger than the queue itself for example). Either change the slot or item sizes accordingly or rotate the items by 90° before moving them into the storage.

3. The load and unload tasks always include the time set in the properties of the task executers. Set those to 0 so only the delay of the Process Flow matters.

4. It seems like you tried to pass an array of items into the Change Visual activity. It only works on a single object, so you need to create a subflow that colors each item individually. Or you use code (in a Custom Code activity), which can actually be quicker to type out than setting up the needed activities.

Object pallet = token.pallet;
for(int i = 1; i <= pallet.subnodes.length; i++)
{
    pallet.subnodes[i].as(Object).color = pallet.color;
}

5. If all values are equally likely, you could just use the "duniform()" distribution. If you want to use percentages, like you have with the three current values, I'd suggest to set up an empirical distribution. The table view makes entering a large number of values easier than the activity GUI.

Empirical("EmpiricalDistribution1").get()