Hi
The manual describes dutching better than I can, but for not stopping after each dutch try the setting shown in the attached screenshot. This will continuously search for dutching opportunities based on your settings. However, if you want to dutch your selections once in each market unattended, I think this can only be done with a trigger. Best thing is to try it out yourself in test mode.
For the auto selections there is a setting on the same settings box in the screenshot. Also refer to Settings > General Options > Market settings > First x selections active for auto trading.
Also if you have done an Import of Selections for Autotrading correctly, only your selections will be active, the others will be greyed out.
As soon as the market conditions are right for the dutch according to your settings, it will fire in the bets. You cannot set a time for this because you do not have the triggers facility, but I would think you have some control based the when you start monitoring the market. For example, if you set the market monitoring to start 5 minutes before the off, the dutch will be fired anytime after that.
Also, if you look at the top-right of the main screen, there should be a button with a yellow question mark. That’s the included manual / help