How to allow upto 5 users for using quickbooks rather than 2?

QB Issue Resolution:

The number of users would depend on the type of subscription you have. You won’t need to buy another license.

Here are the differences in different types of Quickbooks versions.

• QuickBooks Online Simple Start subscriptions would include 1 user and also 2 accountant users.
• QuickBooks Online Essentials  subscriptions would include 3 users as well as 2 accountant users.
• QuickBooks Online Plus  subscriptions would include 5 users as well as 2 accountant users.

Depending on which quickbooks you use, buy that subscription.