Using low search to pull up child categories

Question

I'm setting up a search using nested categories. So in category_grouy 5 I have 5 parent categories and a handful of nested child categories. Using the below returns all categories but parent searches return no results.

<select name="category[]" multiple="multiple">
    {exp:channel:categories channel="attraction" style="linear" category_group="5"}
        <option value="{category_id}"{if category_id IN ({low_search_category})} selected="selected"{/if}>
            {category_name}
        </option>
    {/exp:channel:categories}
</select>

Using this next section gives me the display I want but still the same problem. It's not returning any of the children.

<select name="category[]" multiple="multiple">
    {exp:channel:categories channel="attraction" parent_only="yes" style="linear" category_group="5"}
        <option value="{category_id}"{if category_id IN ({low_search_category})} selected="selected"{/if}>
            {category_name}
        </option>
    {/exp:channel:categories}
</select>

My question: I can display parent categories, so how do I get Low Search to return sub categories when the parent is searched?

Answer 1

Can you go to CP -> Admin -> Channel Administration -> Global Preferences.

See hear if "Auto-Assign Category Parents" is selected as "Yes".

I hope, it would work.