1. Choose the Right Person.
You should consider the needs of the assignment and your knowledge of the person's skills, abilities, interests and motivations i.e. you need to be confident that the person to whom you are delegating will be able to achieve the required results.
2. Give Compliments.
Say why you feel they are the right person for the job.
3. Define the Results You Expect.
The focus needs to be on the GOAL rather than on the tasks performed in order to achieve the required results.
4. Emphasize the Purpose of Achieving the Objectives.
The importance to the organisation and personal benefit of achieving the objective or failing to do so, needs to be emphasized.
5. Ensure There are Adequate Resources
for the devised plan of action which ensures adherence to specified times.
6. Introduce Control Systems.
These need to be developed and introduced so that deviation from progress can be monitored and corrected.
7. Establish a Measurement of Success.
This is necessary to determine whether a satisfactory or outstanding result has been achieved. You want the best.
8. Offer Support
Get agreement and ensure that rules, regulations, limitations and policies regarding the area in which they are to work are understood. Back them all the way.
9. Delegate the Responsibility.
But allow a margin for minor mistakes in judgement.
10. Empower with Sufficient Authority.
For achieving results and reduce your authority. Then you will get the best performance.