Part 1: Setting minimum order amount in catalog management 

Click Inventory Management 

Choose Catalog Management 

Search then choose the applicable catalog, then enter in the Minimum Order Amount.  

Click Save once done 

Part # 2: Ordering parts once the minimum has been set

From the ordering screen, if the parts in the ordering screen do not meet the minimum amount, the number will show in red ( the total cost is for both stock and special order items) . 

The total cost will appear in green if the minimum has been met.