I know it doesn't in 9.0.1.
Forms 9.1 still uses one repository to get its list of named users. New to Forms 9.1 is the Save to Repository service task, which lets you create repository profiles to use when saving form submissions to Laserfiche. Repository profiles allow you to save forms to repositories other than the one your Forms server is connected to.
In Forms 9.1, you set "Save to Repository" service tasks with certain information. This information is like Worklfow Definitions in which you can have Connection Profiles to use. You can set at this point, the server and repository you want the form to save to.
So in short, the answer is yes, just use the Save to Repository service task in your process modeler.