It depends on which type of user you’re adding to the account. A normal QB Online Plus subscription allows you to have up to four additional users for a total of five users. Also, you can add up to two accountant type users and an unlimited number of time tracking users.
Additional users can be added to your QB Online Plus subscription for an additional cost. If you need to add more regular/custom or company administrative users, all you need to do is continue to add users. When you try to add more than your max, the system will give you a prompt about the new cost associated with adding over five users. You will be able to add on addition users over the initial five up to the max of 25 users.