Extend themselves = develop their skills themselves?

[Ganesh]

Goals have to be set in such a way to ensure staff extends themselves so that they maximize their job satisfaction as well as meeting corporate goals.

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I mean:
As the Goals are arranged in a proper way, the staff can get more job satisfaction, develop their job skills and at the same time all the staff can equally obtain their Goals

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Extend themselves = develop their skills themselves.

[Mister Micawber]

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Goals have to be set in such a way as to ensure staff extend themselves so that they maximize their job satisfaction as well as meeting corporate goals.

Extend oneself does not mean just develop one's skills oneself; it means make an effort generally.
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Native English teacher at Mister Micawber's