DCU and Group policies

We need to use own repository for drivers for few reasons, one being to lower internet traffic.

I've set these policies:

Allow Cataloq XML files (enabled)

Configure Driver Library (with UNC path to XML file and driver exe's)

Enable the Default Dell Catalog (this is disabled)

In DellCommandUpdate universal 5.4

Update Source Location:

Allow Cataloq XML files is checked.

Where to check for updates is empty and it says in red text, that there has to be atleast one source location

Enable the Default Dell Cataloque says this:

When this setting is enabled, Dell Command Update will use the default Dell Catalog for updates. When it is disabled, you will need to specify a custom catalog for Dell Command Update to use. If you disable this, without specify a custom catalog XML file, DCU will not work.

There is no GPO to specify a custom catalog XML file. There is setting for it's path though.