Forms\Components\Select::make('field1')
    ->label('Field 1')
    ->options([
        'OP1' => 'OP1',
        'OP2' => 'OP2',
        'OP3' => 'OP3',
    ])
    ->reactive()
    ->afterStateUpdated(function (callable $get, Closure $set, $state) {
        if (
            in_array($state, ['OP1', OP3]) && !$get('required_field')
        ) {
            throw ValidationException::withMessages(['required_field' => 'Check is required']);
        }
    })
    ->required(),
Forms\Components\Select::make('field2')
    ->label('Field 2')
    ->options([
        'OP1' => 'OP1',
        'OP2' => 'OP2',
        'OP3' => 'OP3',
    ])
    ->reactive()
    ->afterStateUpdated(function (callable $get, Closure $set, $state) {
        if (
            in_array($state, ['OP2', OP3]) && !$get('required_field')
        ) {
            throw ValidationException::withMessages(['required_field' => 'Check is required']);
        }
    })
    ->required(),
Forms\Components\Select::make('check1')
    ->label('Check 1')
    ->options(['YES' => 'Yes', 'NO' => 'No'])
    ->default('NO')
    ->reactive()
    ->afterStateUpdated(function (callable $get, Closure $set, $state) {
        if ($state == 'YES' && !$get('required_field')) {
            throw ValidationException::withMessages(['required_field' => 'Check is required']);
        }
    })
    ->required(),
Forms\Components\Select::make('check2')
    ->label('Check 2')
    ->options(['YES' => 'Yes', 'NO' => 'No'])
    ->default('NO')
    ->reactive()
    ->afterStateUpdated(function (callable $get, Closure $set, $state) {
        if ($state == 'YES' && !$get('required_field')) {
            throw ValidationException::withMessages(['required_field' => 'Check is required']);
        }
    })
    ->required(),
Forms\Components\Toggle::make('required_field')
    ->reactive(),