How to hide license key from Agent
Available in Softphone.Pro 7.0 and newer.
Unless you use Softphone.Pro Team service or custom provisioning server with configuration restrictions, Administrator needs to enter license key in app settings on Agent's PC. Agent can view this key in License Key section via Show key button:

To prevent Agent from viewing key do the following:
1. Open SoftphonePro.ini file in text editor.
2. In [AppSettings] section, find DisplayLicenseKeyOnSettingsWindow parameter or add if missing.
3. Set value to 0.
4. Save changes and restart Softphone.Pro.
5. Open app settings and go to License Key section. Show key button will be disabled and hidden:

License Key section is hidden when using Softphone.Pro Team service. With custom provisioning server, use configuration restrictions to hide the settings section.