Thanks for coming back for more support, @Kavon. I'm here to share information on how you can get the Workflow feature. 

Since we're unable to upgrade the QB Online Accountant version, I'd recommend you subscribe to the Advanced version of QuickBooks. 

To sign up for a new account, refer to this topic How can customers sign up for QuickBooks Online Advanced? outlined in this help article: Firm of the future. It provides more insights about QuickBooks Online Advanced update. It also includes answers to most questions asked about the product. 

Feel free to message again if you have additional questions. We're always delighted to help.