I use it also in my ADSM scripts.
Sorry, but I don't know any other way and I think there's none.
If you don't use the user option at the client all users should be able to
access a nodes data.
the client scheduler, started with root authority, makes root the owner of
a scheduled backup files.
q access and set access are client commands not for use through the admin
Another way is to define an administrator with a class of node and grant
him access or owner authority.