If you could do it on the phone in a few seconds you would prefer to get out the laptop, start it up, wait, enter programming, find the program, do the program, close winadmin, turn off the computer, put it away and go rest? OK with me.
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9 0 2 Hold [2nd button on bottom left - often labeled Line 1]
Dial in 2 digits each for hours in 24 hour clock time, minutes, seconds ie 19 57 22 for 7:57 and 22 seconds
Hold Hold # # Hold
At Ease, Dismissed, Don't light 'em up even if you have 'em.