场景3：创建会议

/// 创建会议
- (void)creatMeeting {
    HWMCreateConfParam *param = [[HWMCreateConfParam alloc] init];
    param.subject = @"会议标题";
    param.isCameraOn = YES;// 是否打开摄像头, 默认关闭
    param.isMicOn = YES;// 是否打开麦克风， 默认打开
    param.isAutoRecord = NO;// 是否打开会议录制， 默认关闭
    param.callInRestrictionType = HWMJoinConfRestrictionAll;// 允许入会范围
    // 与会者列表
    if (self.selectedMemebrs) {
        __block NSMutableArray *members = [[NSMutableArray alloc] init];
        [self.selectedMemebrs enumerateObjectsUsingBlock:^(HWMContactSelectedModel * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
            HWMAttendeeInfo *member = [[HWMAttendeeInfo alloc] init];
            member.accountId = obj.accountId;
            member.number = obj.number;
            member.name = obj.name;
            member.thirdUserId = obj.thirdUserId;
            [members addObject:member];
        }];
        param.members = members;
    }
    [[HWMSdk getOpenApi] createConf:param callback:^(NSError * _Nullable error, HWMCreateConfResult * _Nullable result) {
        [self hideLoading];
        if (error) {
            NSLog(@"创会失败%@", error.localizedDescription);
        }else{
            NSLog(@"创会成功");
        }
    }];
}