length of alarm sound

I generally am 'alarmed' when the morning alarm starts wailing...so its not uncommon I've shut the darn noise off within just a few seconds...

However, this length of time is NOT sufficient for alarms at other times of the day...like for when I need to stop what I'm doing and start heading for the dentist office etc...I don't use alarms mid-day very often, but I've noticed that the 'ring' is only a few seconds long...and then I don't 'hear' any audible alarm...but when I arrive at the phone in the other room, etc...I notice that a 'snooze' countdown is active on the screen-display...but no audible alarm is sounding...not good.

So, is there a way to 'lengthen' the sound of the alarm...like to a minute?...or 9 minutes as someone had suggested?...Then to be allowed to 'snooze' or turn it off once I've recognized why I set the alarm in the first place?...Someone a few months ago (regarding a similar question...or was it the first answer on the list of the 'google-search'?...anyhow, the suggestion was to hit the 'three-dot' menu after clicking on the clock icon, and make adjustment in there...{only there is no three-dot menu on my version...}