Go to Catalog

Step 1: Go to Catalog > Product on the side menu bar. 

select catalog

add product

Step 2: Click on the required Product Name to open it.

Add product from catalog

Add bill of material

Step 3: Select Bill of Material from the top bar. 

Step 4: Click on +Bill of Material button.

Bill of material

Add & Save

Step 5: Enter the required details and click on the Add button.

add and save