Step 1 - In customization center, expand QNE Business Solutions>Views
Step 2 - Expand QnEBS.BO.Stock
Step 3 - Expand Stocks_DetailView>Items
Step 4 - Select StockName, change CharacterCasing to Upper
Step 5 - Save the changes then restart QNE Optimum. Now go to check stock name when user key in will always in capital letter
Please refer KB - How to Access Customization Centre