HTC One User Manual page 229

Scheduling or editing an event
You can create or edit events on HTC One, and also sync events with your
Google or Exchange ActiveSync calendars.
Editing events is not supported for all accounts.
1. Open the Calendar app.
2. On any Calendar view, do one of the following:
Create an event Tap
Edit an event
3. Enter and set the event details.
4. To invite contacts from your Google or Exchange ActiveSync
account, tap
5. Tap Save.
If you've invited people to the event, tap Send or Send update.
Checking your schedule for an event
Avoid juggling multiple meetings at the same time. In Calendar, you can
check your appointments to see if a new event would conflict with your
schedule.
1. When creating or editing an event, tap Check calendar.
. Tap
will add the event to.
View an event, and then tap
.
Google Play and other apps
, and then select the calendar you
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.