Pull the string informal verb phrase
To take control or manage the operation of an organization or a group of people, usually in secret or not available to everyone.
It’s complicated to figure out who’s pulling the string of a criminal organization. They are cunning and reticent.
One of the most popular topics in epics films is that the King is powerless to make decisions. The bureaucracy pulls the string of everything.
I suppose that Alice has been pulling the string of the corporation for a long time however she never shows off her power.
To reorganize your own circumstances
If you say that you keep (someone or something) in check, you mean that you keep them under control.
To punish someone or something harshly
He's a really strict teacher, so he'll definitely lower the boom on you if you don't do your homework.