Just as UE-V has a ADMX file for Group Policies, the new APP-V 5 beta delivers an ADMX file for APP-V settings.
You can find the ADMX and ADML files after installing the sequencer:
Copy the files to your policy central store and you will be able to set various settings for the APP-V client.
You can find the settings under Computer ConfigurationPoliciesAdministrative TemplatesSystemApp-V