Presiding

Definitions:

Directing; controlling.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective, noun) (a. / n.) (adjective / noun)

Usage examples:

Said that great statesman and patriot, Henry Clay: " We present to the world the sorry spectacle of a nation that worships Slavery as a household goddess, after having constituted Liberty the presiding divinity over church and state."
- Three Prize Essays on American Slavery by R. B. Thurston A.C. Baldwin Timothy Williston
Increasing daily in favor with " good aunt Dorothy," the presiding mistress of his father's house, he soon became nearly as precious in her sight as had long been the pleasant society of her nephew Pembroke.
- Thaddeus of Warsaw by Jane Porter
I remain in hopes of great and good effects from the decision of the Assembly over which you are presiding
- Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson by Thomas Jefferson