To apply for discount in Metro ERP's Sales App, follow these steps:

1) Go to the "Sales" module by clicking on its icon in the main dashboard or using the application menu.

2) Start by creating a new sales order or quotation for your customer.

3) In the sales order or quotation form, click the "Add a product" button to add products.

4) Search and select the products you want to include in the order.

5) Click on "Add a product" and select "Discount" and put unit price as (-ve) negative value

6) Click on save

If you need any assistance, please write us at support@metrogroup.solutions