Select inventory organization in requisition

Hello,

I would like to change the inventory organization on the purchase requisition screen.
Because the customer uses multiple inventory organizations per location, they did not set an inventory organization when defining the location.
However, when submitting a purchase requisition, the inventory organization is not displayed.
Therefore, the value is fixed at the inventory organization set up in the Configure Requisition Business Function and cannot be changed.

Could you please tell me how to change the inventory organization on the purchase requisition screen?