Requirement: 

Need to add more search criteria in the Product search screen. E.g.  Add Description2 as search criteria.

Steps : 

Steps to add more Product Search Criteria at POS level.

1. Open POS.
   2. Click on the product search button.
   3. Right click on the Description.
   4. Click on the choose search field(refer the attached screenshot)

5. Find the column with field name "Description2" in the available columns and check the checkbox show in Grid.

6. Change the sequence as per your requirement using UP and DOWN key.