In the Sell menu, we can set up to display the product cost. Usually, this configuration setup is used for admins who want to input sales transactions and want to know the cost of the product without switching menus from Sell to the Products menu, this configuration setup may help the user in order to process of checking the Cost of the product in the Sell menu. For the configuration setup, you can follow the steps below :
I. Configuration Module Through Setup Menu
Step 1. Select Module Configuration on More Menu

Step 2. Click Sell, Scroll down to Cost, Select Cost Enable and Visible to "Yes", and click Save

If you set both to "Yes" you can see the unit cost of products during sales transactions and be able to change the product's unit cost in the selling cart.
II. Result
Check the Cost at Sell Menu by clicking the product item, and click Product


If you set the enable Cost to "No" but the visibility is "Yes", then you can only check the product's unit cost and cannot edit the unit cost

*Important notes: You can only edit the Unit Cost from the products during the transaction on the sell menu if you have already been given the role to edit the Cost by turning it on to your User Group Access on Product Cost.

You might also like to read these articles below:
If you want to prevent inventory minus, maybe you can read this article for a more detailed explanation of Configuration to prevent overselling in DealPOS App.
If your store SOP must include the customer's name when making a sale, maybe the config settings in the Customer Required in Sell Menu article will help a lot.