Final answer:
To set up multiple users in QuickBooks Pro or Premier, go to Company > Set Up Users and Passwords > Set Up Users. This feature allows for creating multiple user accounts with distinct access levels.
Step-by-step explanation:
The correct method to set up multiple users in QuickBooks Pro or Premier is Option 1: Choose Company > Set Up Users and Passwords > Set Up Users. This allows you as the administrator to add multiple user accounts, each with varying levels of access and permissions according to the roles they perform within your business. It's important to set up users properly to ensure that sensitive financial data is protected and that staff members have the right access to carry out their jobs.