She has a reputation that 'commands' attention/respect. [=people give her respect/attention because of her reputation]
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
She seems to be 'in (full) command of' the situation. [=she seems to have complete control of the situation]
(..) Person gets Parkinson's... ...when the brain cells that produce dopamine... ...start to disappear. But a zebra fish has the ability... ...to regenerate cells on command. If you could give this ability... ...to the woman you're talking about, that's that. She's... She's curing herself. (..)2012 The Amazing Spider-Man