With or without #870 implemented, the way you have to add items to a given List is not straightforward. I suggest having a floating + button on the bottom of each list, when clicked will bring a dialog from where you can choose the items to be added.
With or without #870 implemented, the way you have to add items to a given List is not straightforward. I suggest having a floating + button on the bottom of each list, when clicked will bring a dialog from where you can choose the items to be added.