backup in other server

hi experts
I have a server that is already making the backup and I want to save it somewhere else (Shared Path), it is understood that I should create a folder and give the permissions to (NT SERVICE \ MSSQLSERVER), but it does not take it, because that I must be on my own PC or server, in these cases as it is done, since it is understood that the backup of the database must not be on the same server.