It's great that you've found just the right article for the feature you need, Michaelin. Let me clarify this for you by providing the details below.
The batch enter transactions feature is available in QuickBooks Desktop (QBDT) Enterprise. Only QBDT Enterprise and QBDT Accountant support batch entering transactions from Excel or CSV files into QuickBooks bank, credit card, accounts receivable, and accounts payable accounts. You can follow the detailed steps in the article you've provided.
Just ensure you back up your accounting data to secure it in case you encounter any problems. You can find in-depth information on how to do this in the following article: Back up your QuickBooks Desktop company file.
Please don't hesitate to drop by this thread again if you need further help managing your transactions. We're determined to help you succeed, Michaelin.