Back in the day, President Reagan insisted that all decisions he needed to make be given to him in the form of a one page memo with a yes/no checkbox. We made fun of him for being stupid back then, but now I appreciate the wisdom of it. If he needed to know more, he could always ask, but a one-page yes/no decision forced some efficiency.
Of course, the effectiveness of this approach depends a great deal on the quality of your staff.
Of course, the effectiveness of this approach depends a great deal on the quality of your staff.