To use Dropbox Business Expert, follow these steps: 1. Sign up for a Dropbox Business account. 2. Download and install the Dropbox application on your devices. 3. Log in with your business account credentials. 4. Create folders and upload files to share with your team. 5. Set permissions for team members to access and edit files. 6. Use the admin console to manage users and monitor activity. 7. Integrate with other business tools for enhanced productivity. 8. Regularly back up important data and ensure security settings are up to date.