Problems about Input order and picking order

Good morning everyone.
I am a student and a new user of Flexsim.
I am facing a problem.
I would like to try to build a warehouse model. It is a simple picking process in a warehouse.
The scenario is when items are created by the sources,Then, each operator takes a cart and picks the pallet. After that, they walk through a network node and stop at each rack to put the pallet into the rack.
There are two problems that I don't know how to set up:
1. The source can create the different types of items with different number in particular time.
2.The operators can pick the items to the specific rack according to the item type

I hope you can help me in detail.
Thankyou for your help. kindly advice.

Best regards,
Fernando Fan

1. If you use "Arrival Schedule" in Source as Arrival Style, you can set the Item Type in the table.
Else you can use the trigger OnExit and use the pickoption "setitemtype"... What distribution with what values to use, you can find in manuals.

2. What Itemtype goes to where, you can set in the "Flow" tab with the pickoption "By Expression" in the Send to port field. Standard is here, that the Itemtype goes to the Outputport with same value.

Thought this all is explained in Toturials!?

Sebastian Hemmann, Thankyou so much .
I got it done..

How about processing the backward scenario?
"The operator take back the item from the rack and put it on the queue"
I don't know how to set up it..
Advice please. Thanks

If there are different Queues available the Itemtype will not help you this time. Think this is what you are looking for!?

Youe can give your Item a label, to set the value for target.
2 different ways possible:

One easy way is, in the Arrivel Schedule to rise number of Labels and refreshing it. (Only possible if you use Arrival Schedule or Arrivel Sequence for Arrival Style)

Other way would be, to open the Flowitem Bin, get the used Item of your Source, open Properties, and add a Number Label.

Now all your produced Items got this Label.
You can set the values with: setlabelnum(item,"name",value). Instead of the "name" of your label you even can take the number of row.
In the Send to Port options of the Rack you now can use: getlabelnum(item,"name") instead of Itemtype;-)

There are even many more interesting thinks to know about modeling you can learn, with spending some time in building all toturial models from Manual

Sorry for I mentioned not detail and my poor English.

The scenario should be like that:
After the items is put on the rack, the operator pick it down from the rack and put it on the queue ( only one queue) at particular time.

I don't know how to set up, so that the operator can come to pick it down at particular time.
I think global table should be used, right?
but, how to set up?

Sorry for my insufficiency knowledge.

On the Rack Tab in the Rack there is a option "Minimum Dwell Time". There you can set a standard time for Dwell time.

In the attached model, I created a label on the item which sets the dwell time.

Or are you looking for a picking order without any dwell times. Just store items until they are needed!?

Thank you very much