You can manually run demand sourcing for a specific sales order.

On the sales order, click Source sales line on the Global Order Promising tab.

This opens the Source Sales Lines job, which allows you to edit the filter query, if desired, but the query is already filtered to the specific sales order.

Turn on the Recalculate date controls toggle to run the base D365 date recalculation if Order has updated the sourcing warehouse for that sales line.

This will recalculate the delivery date when sourcing logic switches the warehouse for a sales line.

Click OK to run demand sourcing for this order.