Conductor
Commander
noun
If 指揮 is "command" or "lead" then someone who does those things is a commander, or conductor. Usually the kind that conducts an orchestra!
The reading for this is the reading of 指揮 plus the on'yomi reading of 者.
どちらの指揮者もまだ来てないんだよ。
Neither commander has come yet.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up what ever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.