Yes, ZelloWork lets you choose to bring Zello to the front of the phone and also unlock the screen so that you can respond to any message with one button press (hardware or screen).
Enable setting from phone
To enable this setting open your Menu > Options > Behavior > Enable "Show on incoming message" > Enable "And turn on the screen".
Apply this setting to all Androids in your ZelloWork network
1) Sign into your management console
2) Go to Settings > Android
3) Enable the settings "Bring Zello to the front when receiving" and "Turn display on when receiving". You must check both boxes and "Save and Apply"
Questions? Email firstname.lastname@example.org.