You highlight your current position at the top of the paragraph
and then, in bullet-point fashion, start with "progressed through four challenging roles in a period of X years", with the next one being "responsibilities included Job A, Job B and Job C before my current position". Then a good third bullet point to show how awesome you are, which is obviously a lie seeing as you're so shit someone 1000 miles away who's never met you is having to write your CV for you.
( Grrrmachine the indifference engine, Tue 23 Jun 2009, 22:56, archived)

It proves I can use my authority to delegate tasks.
(thanks)
( magnum, Tue 23 Jun 2009, 22:57, archived)

"My holding of varied roles has demanded such skills as effecient time management and recognising the need to delegate tasks appropriately"

( Grrrmachine the indifference engine, Tue 23 Jun 2009, 23:01, archived)