HTC One M8 User Manual page 320

320 Settings and security
To remove contacts or numbers from the exceptions list, tap
contact.
Setting a Do not disturb schedule
You can schedule when you want Do not disturb to turn on. For example, if
you can set it to turn on during a weekly meeting.
1. Go to Settings, and then tap Sound.
2. Tap Do not disturb.
3. Tap Do not disturb schedule and then tap
4. Set the start and end times for the schedule.
5. To have the schedule repeat on specific days, tap Repeat and
select which days you want it to occur.
6. To select which contacts will be allowed to reach you when the Do
not disturb schedule is active, tap Contacts to allow calls.
7. Tap Done.
The schedule will be listed on the Do not disturb schedule screen.
> Remove
.