Repeater not saving pivot relationship

Repeater::make('userEvents')
    ->relationship()
    ->model(CalendarEvent::class)
    ->schema([
        Select::make('user_id')
            ->relationship('user','name'),
        Select::make('user_role')
            ->enum(EventUserRole::class)
            ->options(EventUserRole::class),
        DateTimePicker::make('remind_at')
            ->seconds(false),
])

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }
    public function calendarEvent(): BelongsTo
    {
        return $this->belongsTo(CalendarEvent::class);
    }

SELECT * FROM `user_events` WHERE `user_events`.`calendar_event_id` IS NULL and `user_events`.`calendar_event_id` IS not NULL