xF2 Template Modification Sub-Forums Grid

Template: node_list_category

Find:

Code:

    </div>
</xf:macro>

<xf:macro name="depthN" arg-node="!" arg-extras="!" arg-children="!" arg-childExtras="!" arg-depth="1">

Add above:

Code:

        <xf:if is="$depth == 2 AND property('nodeListSubDisplay') == 'flat'">
            <xf:macro template="forum_list" name="sub_nodes_flat"
                      arg-children="{$children}"
                      arg-childExtras="{$childExtras}"
                      arg-depth="{{ $depth + 1 }}" />
        </xf:if>

Ensure the style property nodeListSubDisplay is set to "Listed below node"