# Schedule a meeting for logged-in users

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It's good to have plans, especially for meetings. Our Meeting SDK for iOS provides
meeting management functionalities that help you to create, list, update, and delete
meeting events.

## Meeting Management Warm Up

In order to perform meeting management, firstly we need to get
`MobileRTCPremeetingService` from `MobileRTC` like the following:

```objectivec
MobileRTCPremeetingService *service = [[MobileRTC sharedRTC] getPreMeetingService];

if (service) {
  ....
}
```

## Create or schedule a meeting

To create or schedule a meeting, firstly you will need to have a
`MobileRTCMeetingItem`, you can put all meeting information and
configurations into the `MobileRTCMeetingItem` like this:

```objectivec
id<MobileRTCMeetingItem> item = [service createMeetingItem];
...
// Start configuring meeting item
[item setMeetingTopic:@"xxx"];
[item setStartTime:[NSDate date]];
[item setTimeZoneID:[NSTimeZone defaultTimeZone].name];
[item setDurationInMinutes:60];
....
```

Once the `MobileRTCMeetingItem` is all set, call the `scheduleMeeting`
function to schedule the meeting. After that, you need to destroy the
meeting item.

```objectivec
[service scheduleMeeting:item];
[service destroyMeetingItem:item];
```

To catch the errors during the scheduling process,
override the following function with `sinkSchedultMeeting`
implemented.

```objectivec
- (void)sinkSchedultMeeting:(NSInteger)result
{
    NSLog(@"sinkSchedultMeeting result: %zd", result);
}
```

## List meetings

To list all meetings that belong to the user, call `ListMeeting` function.

```objectivec
if (service) {
    [service listMeeting];
}
```

To catch the errors during the listing process, override the following
function with `sinkListMeeting` implemented.

```objectivec
- (void)sinkListMeeting:(NSInteger)result withMeetingItems:(NSArray*)array
{
    NSLog(@"sinkSchedultMeeting result: %zd items: %@", result, array);
}
```

## Edit or update an existing meeting

To edit or update an existing meeting, get the
`MobileRTCMeetingItem` from `getMeetingItemByNumber`.

```objectivec
id<MobileRTCMeetingItem> item = [service getMeetingItemByNumber:123456789];

if (item) {
  ...
}
```

Next, update the contents in the item and pass to `editMeeting` method.

```objectivec
[item setMeetingTopic:@"xxx yyy"];
[item setMeetingNumber:123456789];
[item setStartTime:[NSDate date]];
[item setMeetingPassword:@"yyy"];

[service editMeeting:item];}
```

To catch the errors during the updating process,
override the following function with `sinkEditMeeting` implemented.

```objectivec
- (void)sinkEditMeeting:(NSInteger)result
{
    NSLog(@"sinkEditMeeting result: %zd", result);
}
```

## Delete a meeting

To delete an existing meeting, first get the `Unique meeting ID`.
Then pass the `meetingUniqueId` to `deleteMeeting` method.

```objectivec
if (service) {
    id<MobileRTCMeetingItem> item = [service getMeetingItemByNumber:123456789];
    if (item) {
        [service deleteMeeting:item];}
    }
}
```

To catch the errors during the deleting process, override the following function
with `sinkDeleteMeeting` implemented.

```objectivec
- (void)sinkDeleteMeeting:(NSInteger)result
{
    NSLog(@"sinkDeleteMeeting result: %zd", result);
}
```