The phrase "acting chief" refers to a person who is temporarily taking on the role of a chief or leader until a permanent one is found or able to resume their duties. Full definition
The watchdog's chairman and acting chief executive will appear before MPs to explain its decision. (totalpolitics.com)
From there, she rose to curatorial assistant, assistant curator, associate curator of exhibitions, and a six - month stint as acting chief curator in 1987. (chicagoreader.com)
Collins» communications director, Grant Loomis, will serve as acting chief of staff in Grant's absence. (nystateofpolitics.com)