Hi All, I have created a model with several queues, 3 of them considered as a warehouses and others as a customers. Also I modified 2 cranes as a drones in order to pickup some items from warehouses and satisfy multi customers and goes to other warehouses and so on.
But, in attached model the drones just satisfy one customer instead of multiple. I create it with process flow using wait for event and subflow. can anyone help me.
Thanks you. Multi_customers.fsm
@MPeyman ,please elaborate, what are the differences to your previous question? https://answers.flexsim.com/questions/134874/multi-drones-multi-warehouses-multi-customers.html. If there aren’t any, then asking questions twice violates best practices of this answer site. On the other side I mentioned before that support for academic exercises or projects is restricted to questions of detailed described problems. Please refer to FlexSim‘s policy of academic integrity.
I'm not seeing the problem you describe. All customers receive items at some point. Each item is taken from a random warehouse to a random customer.
An issue I saw is that you create the items inside the cranes and then tell the cranes to load them, which causes them to teleport around. You should create the items in the warehouse queues.
Also, due to how the movement of the cranes works, it might be better to get rid of the initial travel activity, which would save one lift/drop process.
Hi @Felix Möhlmann, I have a question, in process flow, how or by using which function task executer can randomly choose the queue from group of queue and fill all their capacity on that queue? and for the next time choose randomly again another queue. here I used duniform and it randomly choose but in order to full fill the quantity it goes to different queue. 
In the screenshot, you determine the value of "W" independently for each token that runs through the sub flow.
To have them all refer to the same queue, determine that value once on the "main"/parent-token before it enters the "Load/Transport" activity. If you didn't forbid the created tokens from accessing labels on the parent token, then you don't even need to assign it to each individual token, since they will read the label on the parent token if they don't possess a label of that name themselves.
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