In the meantime, if you are referring to changing the role of the other accountant in your client's user's list, I'll be happy to help you how it's done.
- Go to the Gear icon.
- Under Your Company, select Manage Users.
- Select the Accounting firms tab.
- From the ACTION column, choose either Delete or Make master admin.
This way, you'll be able to manage the other accountant's access and make changes if needed.
I am an accountant user and I cannot change the other accountant user. There is no option "from the ACTION column, choose either Delete or Make master admin"