PowerCLI for changing Update Manager Settings

We're trying to create some handy PowerCLI automation scripts for setting up new vCenter servers, and after moving to vCenter 6.5 where the Update Manager is embedded we want to write a script for the settings configuration of the Update Manager.

Are there any cmdlets etc where the Update Manager settings like Download Schedule, Notification Check Schedule, VM settings etc? I've tried looking everywhere and I can't find any PowerCLI which specifies objects or values to do with the Update Manager settings page. Obviously there are ones for creating baselines and applying the updates etc.

Thanks for any advice or pointing in the right direction.