To Exit from Radix, 

1. Go to Company > Exit or press ALT+F4 shortcut key on Radix main screen.

2. When Radix prompts, 'Are you sure to exit?', click on Yes button or press Enter key.

3. Radix will again prompt, 'Do you want to run the backup now?', click on Yes button, if you want to start the Backup.

4. On clicking No button, you will exit successfully from Radix.