Change the bitrix user password using menu item 1. Manage Hosts in the pool > 5. Change password for bitrix user on host.
You are prompted to input the name of the host where you have to change the password of the bitrix user on and to confirm the action:
Note. You cannot change the password of the root user in the virtual machine menu. Instead, use OS system commands. For example, in Centos 6.5 the console command for changing the root user password is: passwd.