Haven't yet asked for any changes but I would assume they would be very flexible from what I have heard
I work 7:30am-4pm, i got to choose these hours at the start as they suit me the best, and i am able to change them if needed.
My current manager is pretty flexible with hours, often letting me finish early if he knows I have something on later that day or allowing me to start earlier in order to finish earlier some days.
Work hours are currently standard, there is flexibility with hours but currently i am doing normal
My branch manager let me choose my own hours.
I work from 8-4:30 and the commute is not long at all. This allows me to have a great work/life balance.