Simplify the following text for a Grade 18 native English-speaking person.
Original: During the Carter Administration , O'Leary was appointed assistant administrator of the Federal Energy Administration , general counsel of the Community Services Administration , and administrator of the Economic Regulatory Administration at the newly created Department of Energy .
Simplified: During the Carter Administration , O'Leary was made assistant administrator of the Federal Energy Administration , general counsel of the Community Services Administration , and administrator of the Economic Regulatory Administration at the Department of Energy .