While creating customer from POS, POS user mentioned 80% or 50% discount after which item was scanned and discount was applied as defined for the customer.

Below are the steps user require to follow-up for hide Non Mandatory Field

Step 1: Go to Customer Master screen. Right Click go Layout => Customization

Step 2:  Customization Box will appear. Do a drag and drop for the rows which are not needed

Step 3:  Again right click on view go to Layout => Save => Default, to save the layout customization

Step 4: Success message will appear on Top

Step 5: Now whenever the user will open the screen again, the screen with new customization will appear. 

Note : Incase if you configure multiple discount over store MC based on item \customer then discount will be applied based on to configure Discount Resolution Setup