# FAQ

{% tabs %}
{% tab title="Lookup Selector" %}
**Q: Can I set a filter so that only specific values will be displayed to users when they are selecting from the Parent objects?**

> In Advanced Condition, you can use `{$Parent.fieldname}` to filter for the desired Parent field values.\
> :link: Reference: [Lookup Object Filter > Advanced Condition](/smallbuilder-line-items/setup/relate-objects.md#lookup-object-filter)

**Q: Can I just use the Line-Item Editor without the Lookup Selector?**

> If you check "Block adding items" on the Linked Objects Setup screen when specifying the Lookup object, users will only be able to use the Line-Item Editor, not the Lookup Selector. However, you must still specify a Lookup object. In the future, we plan to support the use of the Parent and Line-Item objects alone, without a Lookup object.
>
> :link: Reference: [Linked objects setup > Lookup Object Filter](/smallbuilder-line-items/setup/relate-objects.md#lookup-object-filter)
> {% endtab %}

{% tab title="Line-Item Editor" %}
**Q: Can I control deletion of objects from the Line-Item Editor based on certain conditions?**

> You can specify a Boolean field in the Line-Item object to control whether or not objects can be deleted. Where the value of this field is true, deletion will be blocked.
>
> :link: Reference: [Linked objects setup > ](/smallbuilder-line-items/setup/relate-objects.md)[Line-item Object Advanced Settings > Delete Controller Field](/smallbuilder-line-items/setup/relate-objects.md#line-item-object-advanced-setting)
> {% endtab %}
> {% endtabs %}


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