Thank you for the update. Good to know it works the way you wish.
However as I mentioned, the above workaround requires the time setting of the device in 24 hours format. If user fails to do that , the user will be unable to set duration beyond 12 hours and it will also display AM/ PM notation.
So . another workaround may be to have two number type columns in slider (range setting) mode.
Hours setting from 00 to 23 and minutes and seconds setting in 00 to 59 range with the increment /decrement steps of 1
If these settings are in slider mode , the user will find it convenient to easily set hours and minutes ( and seconds, if required)
The third duration column can have an expression as below that converts the number settings into duration.
TIME(CONCATENATE([Set Hours],":",[Set Minutes]))-“00:00:00”
In the screenshot below, the SetDuration V is the computed duration column based on the two number settings columns above.