To add opening stock in the Store Module, you can follow these steps:

1. Go to the Store Module and click on "Stock."
2. Select "Opening Stock" from the available options.
3. Click on "Add Opening Stock" to begin the process.
4. Select the desired Category and Product for the opening stock.
5. Enter the Quantity of the product in stock.
6. Provide the Purchase Rate for the product.
7. If you have multiple entries to make, click on the Plus Sign to add additional entries.
8. Once you have entered all the necessary details, click on the "Save" button.

By following these steps, you can add the opening stock by specifying the Category, Product, Quantity, and Purchase Rate. This will help you accurately record and manage the initial stock levels in the store