How to automate process releases in batch in a single buy shipment in OTM 6.4.1?

Hello,

We are trying to automate to process several "releases" previously processed in a single buy shipment.

We created an agent, of type "ORDER RELEASES", with an "ORDER - CREATED" event.

So it works, but it creates a ship per release, what we need is to create one ship per all the releases that we import in a single batch.

I mean, we need like a group id or something like that for a batch of releases and so we can process all in a single ship.

How could we do it with an agent?

Is there another way?

We have OTM 6.4.1.