Make the decisions.
Even when you're delegating responsibilities to others, it's still down to you to make the big decisions. Leading a team isn't a democracy, and while you can and should accept their input, when it comes down to it, you have to make the final call. Don't delay too much on making important decisions, because if you aren't leading, then your team may be heading off in different directions.
Catch more of Madam Secretary on Sundays, 8/7c on CBS.