He left after only a year 'at the helm' [='in charge'] of the corporation.
The ship's captain was 'at the helm'. [=steering the ship]
The ship's captain 'took the helm'. [=steered the ship]
(..) What do you know about the Czech Republic? This office needs an ASAC. I have no doubt this DO would be well served with you at the helm. I left something for you. I'm out. W.W. I mean, who do you figure that is? You got me. (..)2013 TvShow: Breaking Bad Title: Blood Money Season: 5 Episode 9