In charge of things implies the economic interests and power of a working structure, not really the responsibility for maintaining and sustaining a requirement.

Who’s in charge of the mines type of responsibility.

Temporal implosions on scale haven’t been tested before.

So you wanna work in a temporal recall system?

Do you have any prior experience?

Who’s in charge of the reactors here? I wanna talk to the manager.

By all means, you go.