Hi @ramprakasht3196 ,
We can define 'default columns' in List view using navigation hierarchy.
I saw nms:recipient schema is defined in nms:core navigation hierarchy.
Consider if you wants to add @phone attribute in default column, then you can add it as highlighted below (xpath node)
<nodeModel folderLink="folder" img="nms:rcpFolder.png" label="Recipients" name="nmsRecipient">
<view name="listdet" schema="nms:recipient" type="listdet">
<columns>
<node xpath="@firstName"/>
<node xpath="@lastName"/>
<node xpath="@email"/>
<node xpath="@account"/>
<node xpath="@phone"/>
</columns>
Regards,
ParthaSarathy S