Single Model Across Steps

To use a single model across steps you can use the disabled and only options intelligently, make sure you are not using both of these options for the same step.

use buttflattery\formwizard\FormWizard;
echo FormWizard::widget([
    'steps' => [
        [
            'model' => $shootsModel,
            'title' => 'Shoot Description',
            'description' => 'Provide description only',
            'formInfoText' => 'The date fields(created_at, updated_at), and shoot_type, are disabled for this step by using the `disabled` option.',
            'fieldConfig' => [
                'except' => ['created_at', 'updated_at', 'shoot_type'], // all fields except these will be added in the step
            ]
        ],
        [
            'model' => $shootsModel,
            'title' => 'Shoot Dates',
            'description' => 'Provide dates only',
            'formInfoText' => 'Provide Shoot Dates',
            'fieldConfig' => [
                'only' => ['created_at', 'updated_at', 'shoot_type'], // only these field will be added in the step, rest all will be hidden/ignored.
            ]
        ]
    ]
]);