I have question, that main window (4x4 = 16's icon, and lower (4's special icon, 16's icon can changed? must icon stay here (is look build-in) , can move to Page2 (customer add app and bulid-in mix) ? that lower 4's icon area, disable? changed to other icon, build-in and customer add mix, and background color can changed? Also ,16's icon and 4's icon size can bigger/ or smaller? please!