Yes- - - -the normal lube level will be just slightly below the bottom of the upper plug hole. If you can put a fingertip into the hole and touch fluid with the transmission cold, that leaves a little room for heat expansion during normal running. Too high, and there's a tendency to leak from the front bearing retainer and contaminate the clutch disc, especially if the vehicle is parked in a nose-down attitude. The spinning cluster gear splash-lubricates the whole transmission.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!