Ably is a form of adverb and the meaning of ably refers to doing something in an able manner, or doing something skilfully. So, the meaning of ably can be taken as performing some task efficiently.
Often ably is used to highlight someone's skills and capability of handling situations.
1. She controlled the meeting ably.
2. He was ably supported by the committee in his tasks.
3. My experience says that you cannot do this work ably.
4. You will need my help to manage your business ably.