Ladder Interface User Guide incorrect or not
The user guide is correct, that feature is the original way of greening-up from the very early years of Bet Angel, Since the introduction of the trade profit column it is not really needed anymore but has been left in as some people do still like to use it.
It can be turned on or off by clicking on
settings > edit settings > ladder and tick 'show legacy green-up button'
It can be turned on or off by clicking on
settings > edit settings > ladder and tick 'show legacy green-up button'