Yes, it is possible if you use Orderry. There are handy features for both types of processes. In case you provide repair services and sell some parts or accessories to a client, you create a Work Order where you add services and items from your stock as well as assign them to a responsible person. If you just sell some products, you create a Sale where you add items that will be sold and the system writes them off from your stock. In both cases, you can also generate any document you need in a few clicks. Later, you will be able to analyze sales reports and identify the most popular and profitable services and products.