The control scheme was designed for the mobile platform. With that said, it was much easier to drag and "drop" where you wanted units to go. It's not particularly hard to implement it so that units always stay selected; and to convert the existing code base into more of a PC interface.units don't stay selected
You can select multiple units by simply using more fingers on the touch screen. Thus I suppose up to ten units can be selected; unless you want to use toes on your touch screen.nor can you select a group
You can also use the mini map for movement. Drag and "drop" the unit onto the mini map and they will go there.so it's painfully slow to move any kind of force whatso-ever across the map to confront the enemy base
They are for managing groups. You select any number of units, and then tap one of the boxes. Units from there on are bound to that box, and you can reselect them all by dragging and dropping the box.I still don't know what the boxes along the bottom are for, they don't track construction, units, or anything else really.
As I have said a number of times already, this Starter Kit was primarily designed for the mobile platform; so it's interface was designed with a touch screen in mind. When I originally implemented a PC like interface for the touch screen, it was very difficult to use because you don't have the distinction between a left click and a right click. You also don't have hot keys, and thus having to move units by selecting -> then selecting the move command -> then pressing where to go was not at all intuitive. It makes sense on the PC because you have a mouse and a keyboard.
With that said, there are various people working on a PC control scheme for the Starter Kit. I'd be interested to see how they are developing...