"Default workspace" is designed to be configurable in "Workspace properties" Edit page. But it's not rendered even with admin role user. Only 'root' can render that.

https://github.com/kiegroup/dashboard-builder/blob/6.5.0.Final/modules/dashboard-ui/dashboard-ui-core/src/main/webapp/configuration/tree/editPages/WorkspaceNodeEdit.jsp#L231-L248

https://github.com/kiegroup/dashboard-builder/blob/6.5.0.Final/modules/dashboard-ui/dashboard-ui-core/src/main/java/org/jboss/dashboard/ui/config/components/workspace/WorkspacePropertiesFormatter.java#L113-L117

Such a gap between "admin" and "root" seems to be considered as a bug (FYI: https://bugzilla.redhat.com/show_bug.cgi?id=1136743)

We can work around the problem with system properties.

    <system-properties>
        ...
        <property name="org.jboss.dashboard.users.UserStatus.rootLogin" value="bpmsAdmin"/>
        <property name="org.jboss.dashboard.users.UserStatus.rootUserName" value="bpmsAdmin"/>
    </system-properties>