- Login to Magento dashboard.
- Go to CATALOG and then select Products.
- Click over Edit option given at right of the product on Products page.
- On the next page, scroll down to Quantity section and enter the number as requirement.
- You can click over Advanced Inventory to manage inventory and then Save Changes.
That's It !
You can check out the video tutorial to get in-detailed procedure. You may refer to the blog as well.