To set up users in the Admin portal, follow these steps: 1. Log in to the Admin portal with your administrator credentials. 2. Navigate to the 'Users' section in the main menu. 3. Click on 'Add User' to create a new user account. 4. Fill in the required user information, such as name, email, and role. 5. Set a temporary password for the new user. 6. Assign the appropriate permissions and access levels. 7. Save the changes to create the user account. 8. Notify the user of their new account details and instruct them to log in and change their password.