Should I add this app to my employee mobile and handle all the excess but he have only rights of sales and expenses ?

Thank you for reaching out to us, @mahaluxmi3007-gm.

I'll be glad to help you with your app concern.

Using the mobile application, the user would still have the same access.

QuickBooks mobile apps are improved for a one-touch collaboration and important on-the-go workflows, such as taking payments, invoicing, checking reports, signatures, taking payments, estimates, online bank reconciliation, customer management, and capturing expenses.

You can also check on this article: QuickBooks Online app for more information about  QuickBooks Applications.

We're always here in the Community to help if you have other questions related to QuickBooks. Stay safe!