das Sagen haben — to have the say. Wer hat hier das Sagen? Who has the say here?
Herr im eigenen Haus — master in one’s own house. Said of someone who decides how things are done on his own ground.
Deutungshoheit — sovereignty of interpretation. The authority to decide what something means.
Herr der Prozesse — master of the processes. A headline in the IT weekly Computerwoche in November 2008, about a company that settled who owns its processes before it introduced new software.