HTC Desire626 User Manual page 256

256 Settings and security
4. Enter a name for the rule, and then select whether to base it on time or an
event.
Rule
Time rule
Event rule
You can turn a schedule on or off by tapping the On/Off switch when viewing
the details of the schedule.
Settings
§ Set the days.
§ Set the start and end times.
§ Select a Do not disturb level.
§ Select a calendar you want to make the rule for.
§ Set a condition for the type of reply.
§ Select a Do not disturb level.