In the screenshot at the top of http://zorro-trader.com/manual/en/trading.htm Trading is underway and the [Train] button is disabled. I observe the same UI when my own strategy is in Trade mode.

Further down it says
"Re-training: While trading, the [Train] button can be clicked anytime for starting a new optimization cycle. A second Zorro instance will pop up and start a training run while the first Zorro continues trading."

Clicking the disabled [Train] button does nothing, obviously. What am I missing?