To know how to ask is the key to be a success superior

When you are asked by employees some questions, don't answer them immediately!

Rather than just answer the questions directly, you may ask them another open question so that they can more likely reconsider or brainstorm about the solution. Beware that you need to "ask" as if you are offering suggestions and say it with sincerity. In addition, remember to give some feedback after their replying because that would make them feel being respected. In conclusion, one cannot know everything; therefore, the key to success lies in asking!