How to display item with different UOM for TO in RSSP when supplied from different sub-inventories

Summary:

My client is having 2 supply sub-inventory through which internal transfer orders are fulfilled, Client wants to display different UOM based on the supply sub-inventory.

Content (please ensure you mask any confidential information):

we have 1 inventory orgs and 3 sub-inventory under that org.

lets assume an item 30001 with primary UOM as "Each".

the item is purchased in "Carton of 1000"

Sub-inventory 1 is the main store, in which the item is traded in "Box of 100"
Sub-inventory 2 is the Sub store, in which the item is traded in "Box of 10"
Sub-inventory 3 is the End user location, in which the item is traded in "Each"