system audio volume revisited?

[Karen Lewellen]

hi everyone,
I have a mid 2012 15 inch macbook pro retina now running os 10.15.7 
Catalina.
I recall  the discussion about the apple start up sound being removed, was 
told by apple accessibility that this is corrected  by accessing system 
preferences, sound, sound effects, and making sure there is a checkbox 
beside start up sound.
What I do not recall though is how one insures the start up sound volume 
is turned up,  something I want to know just in case.
Also, if the start up sound is  provided, does it also happen when 
awakening the mac, opening the lid?
Thanks,
Karen