The phrase "already in charge of" is correct and usable in written English.
You can use it to indicate that someone has been given responsibility or authority over a particular task or group prior to the current moment.
Example: "She is already in charge of the marketing team, overseeing all campaigns and strategies."
Alternatives: "currently responsible for" or "already overseeing".
"The army is already in charge of security".
Exner, not yet 30, was already in charge of Pontiac styling at General Motors.
There is nothing new here: Mr Chakrabarty is already in charge of this and the data is clear.
Already in charge of her younger siblings and frail mother, Ree knows their future is down to her.
In that one, Ms. Hudson, already in charge of I.F.P./West, played a hard-bitten colonel who, under hostile grilling on the witness stand, refused to flinch.
I do remember the sense that one person was already in charge of everything, but I don't remember who formally scheduled the vote".
Mr. Townsend, 59, who as the head of the Advance Magazine Group had already been in charge of Condé Nast's circulation, finance, technology and shared services departments, now adds Condé Nast's advertising sales and corporate marketing to his portfolio.
He'd already been in charge of the New York Philharmonic for a year but was better known as the brilliant composer of the jazzy West Side Story, which had taken London by storm the previous autumn.
But Samsung continues to invest heavily in Tizen, an operating system of its own, that powers its simpler handsets and other devices a weapon that could be deployed more widely if the need arose.As Samsung's "chief customer officer", a job created for him, the younger Mr Lee has already been in charge of such tricky relations for several years, says Shaun Cochran of CLSA, a stockbroker.
Afghan authorities have already been nominally in charge of Kabul for some time.
Already, the technician in charge of setting up the server at Clinton's home has reportedly been granted immunity by the FBI in exchange for cooperating – an often routine procedure in such circumstances but one which underlines what is at stake.
