By default, the "Stock Reorder Report" will only display the Parent SKU. In order for the report to display Child SKU, you have to change as below:
Navigate to Master Files > SKU > SKU Listing. Search and click on the SKU, and click on Edit SKU to proceed.
In the SKU Master File, tick the By Child option for the PO Reorder Qty located under General Information.
Scroll down and set the PO Reorder Qty for each individual Parent & Child SKU.
Scroll to the bottom and click on Update when complete.
Set PO Reorder Qty by Branch
Click on the "Set PO Reorder Qty by Branch" icon to proceed.
Set the PO Reorder Qty for each respective branch and click on Save when complete.