How can package download from Notification Server when Package Server is shutdown?

Hi all,

I am using CMS 7.6 HF7.

I know that the NS will act as PS by default in SMP 7.1. If a new PS is launched, no agent will default to NS even if the PS is not reachable.

I have a PS which will be shutdown for maintenance  in SMP 7.6 now and I have no other PS for the agents to download packages. My question is: how can I conifgure the setting in NS so that the agent can go to the NS for downloading the packages?

Thank you.