He will stand in as the acting manager.

他会代替出任代理经理的职务。

youdao

I'm acting as deputy till the manager returns.

我在经理回来之前代行他的职务。

《牛津词典》

The engineering manager Francis had come a long way - once a habitual micromanager, he was now acting like much more of a mentor and coach for the Team.

工程经理Francis有了很大的改进-他曾是名习惯性的微管理者，他现在更像是团队的导师和教练。

youdao

He grew up in Lincolnshire and went to school in Reading, beginning his professional career as acting assistant stage manager at the Regent's Park Open Air Theatre.

BBC: Film festival honours UK actor

The demonstration closed the police department headquarters briefly, and City Manager Norton Bonaparte Jr. and Acting Police Chief Darren Scott met with leaders of the student group and community leaders.

CNN: Zimmerman speaks, raises funds on new website

Aegis Capital is acting as sole book-running manager for the offering.

FORBES: Stemline Therapeutics Announces Pricing of IPO