WSUS PS sync script

Hello,

We are trying to build a powershell script which will be executed on any client which should be able to search/install windows updates from a wsus server which resides in our network but it is not the default option in the clients configuration. The severs are configured with let's say wsus server X and we are trying to sync with wsus server Z and very important, we should not modify the client configuration.

We tried to find a module/option to achive what we described without any luck.

Did anyone tried something similar ? if yes, any hints ?