> For the complete documentation index, see [llms.txt](https://knowledge.out-smart.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.out-smart.com/marketplace-packages-and-power-ups/power-ups/forms/what-is-visual-forms/use-advanced-mandatory-rules-in-visual-forms.md).

# Use advanced mandatory rules in Visual Forms

Advanced mandatory rules let you control when a field becomes required.

Use them when a field should only be mandatory in specific situations.

### When advanced mandatory rules help

Use them when you need to:

* require extra details after a specific answer
* require a signature only for certain outcomes
* require a photo or comment after a failed check

### How the rules work

Each rule checks another field.

You then decide when the selected field becomes required.

You can combine rules with:

* **AND** — all conditions must be true
* **OR** — at least one condition must be true

### Set up advanced mandatory rules

{% stepper %}
{% step %}

### Open the Visual Form

Open the form in **Settings → Forms**.
{% endstep %}

{% step %}

### Select the field

Click the field that should become required.
{% endstep %}

{% step %}

### Change the mandatory setting

Open the field properties.

Set the mandatory option to the advanced mode.
{% endstep %}

{% step %}

### Add the rules

Choose the field to evaluate.

Then choose the operator and value.
{% endstep %}

{% step %}

### Choose the rule logic

Use **AND** or **OR** when you combine multiple rules.
{% endstep %}

{% step %}

### Save and test

Save the form.

Then test each expected outcome before rollout.
{% endstep %}
{% endstepper %}

### Good rule design

* keep the logic as simple as possible
* use clear field names
* test both required and not-required outcomes

### Frequently asked questions

<details>

<summary>Can I use more than one rule?</summary>

Yes.

You can combine multiple rules with **AND** or **OR**.

</details>

<details>

<summary>Do these rules also work in the mobile app?</summary>

Yes.

Test the result on the device your team uses.

</details>

<details>

<summary>Can every field type use advanced mandatory rules?</summary>

Usually yes.

The available operators can differ per field type.

</details>

### Related topics

* [**Use the Visual Forms Configurator**](/marketplace-packages-and-power-ups/power-ups/forms/what-is-visual-forms/use-the-visual-forms-configurator.md)
* [**Configure read-only fields in Visual Forms**](/marketplace-packages-and-power-ups/power-ups/forms/what-is-visual-forms/configure-read-only-fields-in-visual-forms.md)
* [**Use Visual Forms in the mobile app**](/marketplace-packages-and-power-ups/power-ups/forms/use-visual-forms-in-the-mobile-app.md)


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