Help With Option Button

[YOUNG SERG]

I Searched The Thread Using Keywords Option + Button But Had No Luck, So Here Is My Question..sorry If It Is Extremely Stupid..

Im Using Trial Version Of Volume Care 5.1 ( I Think) . . It Says That While On A Call I Can Adjust My Mic Volume (how Hard People Hear Me) ..by Pressing And Holding The Option Button+ Moving The 5 Way Navigation Up Or Down . . Where The Heck Is The Option Key? What Option Key Are They Talking About? Sorry But It's Just Bothering Me And I Need This For When I Am In Noisy Environments And I Need People To Hear Me Clearly (conferences,subway, Bars Etc.) Please Any Feedback Will Be Appreciated, Thank You Kindly

[plunker]

They are probably referring to the programmable keys just to the left of the red phone button or just to the right of the green phone button. I don't use that program so I'm not sure.

Hit menu go to prefs, under buttons there is where you setup those buttons.

[Kreth]

The option button is the button with the black dot on it, next to the Z key.

[YOUNG SERG]

Thanks Kreth You're The Man . . Let Me Ask You This..are There Any Other Option+other Button Combos That Work As Other Cool Shortcuts That I Dont Know About? One Thing I Came Across A Couple Of Weeks Ago In A Thread That I Can't Seem To Find Now..is Someone Was Discussing The Quickest Way To Jot Down A Number In The Phone And Save It..while On A Call. Im Pretty Sure They Used Some Sort Of Option+another Button Combo To Go About Doing It...any Input?