To add multiple users to Office 365, follow these steps:
1. Log in to your Office 365 admin account.
2. Go to the "Users" section.
3. Select "Active Users."
4. Click "Add a user."
5. Fill in the required information for each user.
6. Choose the license and settings for each user.
7. Click "Add" to complete the process.
8. Repeat these steps for each additional user.
Note: Make sure you have sufficient licenses available for the number of users you want to add.