Boot runner restart time

Is there a way to change the amount of time before boot runner will pop back up at the login window? We have some older macs that take a while to log users in the first time. So we’ve found that Mac OS is still creating the account and boot runner will pop back up. It will eventually go away when the account is created, but this is confusing some of our users and they’ll click on it again or might click on windows and then the computer will reboot while still creating the account.

yes, there is a key that you set in the configuration:

Timeout – (integer) Time in seconds from when the OS X login screen is displayed without keyboard/mouse activity before returning to the Boot Runner selection screen.